Vertiv Emerson Liebert itON LI32121CT00 800VA
The ProLink PRO851SFCU Super Fast Charging UPS is designed to provide reliable backup power and voltage protection for computers, networking equipment, and home electronics. It helps keep essential devices operating during short power interruptions and unstable electrical conditions. The UPS provides an 850VA capacity and features line interactive technology with Automatic Voltage Regulation (AVR). Additionally, AVR helps stabilize voltage fluctuations and protects connected devices from overvoltage and undervoltage conditions. The ProLink PRO851SFCU features super-fast charging technology that significantly reduces battery recharge time after power outages. Moreover, this feature helps ensure the UPS is ready for future interruptions more quickly. The UPS includes multiple protection functions against overload, short circuit, surge, and battery discharge conditions. Furthermore, these protection features help improve the safety and reliability of connected equipment. The PRO851SFCU includes LED status indicators that allow users to monitor operating conditions easily. Therefore, users can quickly check power status, battery mode, and system operation. The compact design makes the UPS suitable for homes, offices, and small workspaces. In addition, it provides dependable backup support for desktop computers, routers, CCTV systems, and other important electronic devices. The ProLink PRO851SFCU Super Fast Charging UPS combines backup power, fast battery charging, AVR technology, and safety features. As a result, it provides a practical and reliable power protection solution for everyday use. Specifications: Capacity : 850VA Input : 230VAC Output : 230VAC Input Voltage : 510W Transfer Time : 2ms Battery Type : 12V/10Ah x1 Backup Time : 10-30 Min Part Number : PRO851SCFU
The PROLINK PRO1201 1200VA Super-Fast Charging UPS AVR is designed to provide reliable backup power and voltage protection for computers, networking equipment, and home electronics. It helps keep connected devices running during short power interruptions. The UPS provides a 1200VA capacity and uses Automatic Voltage Regulation (AVR) technology. Additionally, it helps stabilize unstable voltage levels to protect connected equipment from power fluctuations. The PROLINK PRO1201 features super-fast charging technology that helps reduce battery recharge time. Moreover, it allows the UPS to recover power faster after an outage and prepares it for future use. The UPS includes multiple protection features to help protect connected devices. Furthermore, it provides protection against overload, short circuit, surge, and low battery conditions during operation. The PROLINK PRO1201 features LED indicators that display important operating status information. Therefore, users can easily check the UPS condition and power status. The compact design makes the UPS suitable for homes, offices, and small workspaces. In addition, it provides a practical backup solution for computers, routers, and other essential devices. The PROLINK PRO1201 1200VA Super-Fast Charging UPS AVR combines backup power, voltage regulation, fast charging, and safety features. As a result, it provides reliable power support for everyday electronic equipment. Specifications: Capacity: 1200VA / 720W Technology: Automatic Voltage Regulation (AVR) Charging: Super-Fast Charging Technology Protection: Overload, Short Circuit, Surge, Low Battery Protection Display: LED Status Indicators
Original product name: UPS 5E1100iUSB Eaton Line Interactive UPS 1100VA / 660W, AVR, 6 IEC, USB port, software, Input / Output jacks included for Telephone / Modem / Internet Line surge protection | 2 Years Warranty 5E1100iUSB Eaton Line Interactive UPS 1100VA / 660W, AVR, 6 IEC, USB port, software, Input / Output jacks included for Telephone / Modem / Internet Line surge protection, 2 Years Warranty (Including Battery)
UPS HAWK 2000VA 2kva 1 year warranty
The APC UPS Online Easy SRV 800W / 1 KVA SRV1KI delivers continuous, reliable power for critical equipment. First, it provides pure sine wave output suitable for sensitive electronics. In addition, it protects devices from phttps://mojitech.net/shop/peripherals/ups-battery-backup/apc-smart-ups-rc-800w-1kva-sine-wave-lebanon/ower surges, spikes, and outages. Moreover, the UPS features a compact design for easy installation in offices or server rooms. Finally, the intuitive LCD interface allows real-time monitoring of battery status and load. The SRV1KI ensures uninterrupted operation and safeguards essential systems during power disruptions. Specifications: 800W / 1 KVA pure sine wave output for sensitive devices Protects against power surges, spikes, and outages Compact design suitable for offices and server rooms LCD interface for monitoring battery and load status Ensures uninterrupted operation during power disruptions
Aokly Gel Battery 12V – 200A 58.5Kg manufacturer link
Eaton 5S UPS, 1500 VA, 900 W, Input: C14, Outputs: (4) C13, (4) C13 surge only, Tower General Topology Line-Interactive (AVR with Booster + Fader) Configuration Tower or under monitor Part Number 5S1500i Color Black Rating (VA/Watts) 1500/900 Dimensions (H x W x D, mm) 250 x 87 x 382 Weight (kg) 11.08 Electrical Input Connection (1) IEC-320-C14 Input Voltage Range 175V-275 V Nominal Voltage 230 V Operating Frequency 50-60 Hz autoselect Electrical Output Nominal Voltage 230 VAC Output voltage regulation 230 V +/- 10% Outlets (4) IEC-320-C13 (4) IEC-320-C13 surge only Communications Communication Ports HID-compliant USB port for automatic integration with most common operating systems (Windows Vista, 7 & 8, Linux, Mac OS X), cable supplied Environmental & Standards Audible Noise < 40 dB at 1 Meter Operating Temperature 0 to 40°C Safety markings IEC/EN 62040-1, IEC/EN 62040 -5 Markings CB Report, CE mark Data Line Protection Tel/Fax/Modem/Internet and Ethernet 2 Years Warranty manufacturer link
The Beco GS3000 3000VA 1800W UPS delivers powerful backup power for demanding home, office, and business setups. It supports high-performance desktops, servers, and networking systems. This UPS helps prevent data loss and sudden shutdowns during power outages. Users enjoy dependable protection while working and gaming. Moreover, the Beco GS3000 3000VA 1800W UPS offers a strong 3000 VA capacity with 1800 W output power for heavy electrical loads. It keeps multiple devices powered longer during interruptions. This improves system stability and uptime. Reliability stays consistent under heavy use. In addition, the UPS features built-in surge protection for shielding electronics against voltage spikes. It guards your devices from electrical damage. This adds extra peace of mind during storms and unstable power. Protection remains strong and consistent. Furthermore, the Beco GS3000 3000VA 1800W UPS includes automatic voltage regulation to correct lows and highs. It balances voltage without manual input. As a result, connected systems receive steady power. This helps prolong device lifespan. Also, the UPS delivers reliable battery backup when electricity fails. You can save work and safely shut down devices before the battery runs out. This prevents data corruption and interruptions. Backup support feels dependable. In addition, the Beco GS3000 3000VA 1800W UPS includes clear LED indicators for easy status checks. You can monitor power and battery conditions at a glance. Monitoring becomes simple and intuitive. Users stay informed. Moreover, the UPS supports multiple output sockets for connecting many devices. This increases flexibility for busy workstations, servers, and media setups. You can protect key electronics with one unit. Furthermore, the Beco GS3000 3000VA 1800W UPS supports plug-and-play installation without complex steps. Setup is fast and stress-free for all users. Connections remain secure and organized. Also, the sturdy and compact design fits desks, shelves, and racks without taking much space. It blends well into office and home environments. Overall, the Beco GS3000 3000VA 1800W UPS delivers strong battery backup, surge protection, and steady voltage regulation. This UPS is ideal for users who need powerful and dependable power protection daily. Specifications: 3000VA, 1800W, LCD, Metal Case Input: 145-290 VAC Output: 230VAC 50/60HZ 12V 9AH *4pcs, Universal Socket *4 + EU Plug With AVR, Bypass output Overload and short circuit protection
The Yuasa SW280 Industrial VRLA Battery delivers dependable backup power for industrial systems. It uses Valve Regulated Lead Acid (VRLA) technology for safety and maintenance-free use. Also, its sealed design prevents leaks and allows flexible installation. First, this battery is built to last in tough environments. Moreover, it resists vibrations and shocks in heavy machinery settings. Therefore, it works well in factories, security systems, and telecom units. Second, the Yuasa SW280 provides high capacity and consistent performance. It delivers stable output during power outages or load changes. In addition, it supports long discharge times when needed. Consequently, your critical system stays operational without interruption. Also, this battery is easy to install and service. It fits standard industrial racks and cabinets. Plus, it has clear terminal markings for safe connection. Thus, technicians can install it quickly and correctly. Moreover, the VRLA design means no water topping up is required. Therefore, you avoid extra maintenance and reduce downtime. Furthermore, the sealed casing minimizes acid exposure risk. Hence, it is safer for indoor installations. Another key feature is reliable thermal performance. It operates well in temperatures from 0°C to 40°C. Also, it handles variations in industrial climates. Thus, it maintains long service life and consistent power. Importantly, Yuasa provides strong quality assurance. Their factories follow strict ISO standards for production. Also, full warranty coverage gives peace of mind. Hence, you can trust the battery for critical workloads. In summary, the Yuasa SW280 Industrial VRLA Battery combines durability, safety, and dependable power. Furthermore, its maintenance-free and sealed design adds convenience and protection. If you need a trusted industrial battery, this is an excellent choice. Specifications: Length (mm) : 151 Width (mm) : 65 Height (mm) : 97.5 Weight (kg) : 2.6 Nominal Voltage : 12
Specifications : Le grand ups keor spx 800va 310301 1year warranty ups 800va
The Twist Online High Frequency UPS 6KVA TWUP6000/HF provides continuous backup power for servers, networking systems, and critical equipment. It uses online double conversion technology for stable and clean power delivery. Additionally, the high-frequency design improves efficiency and reduces transfer interruptions. Moreover, the UPS includes an LCD display for real-time monitoring and system alerts. It features internal 16x12V/9Ah batteries for backup operation during outages. Therefore, it protects connected devices from voltage fluctuations, overloads, and sudden power loss. Furthermore, the TWUP6000/HF supports pure sine wave output for sensitive electronic equipment. It also includes overload, short-circuit, and overheating protection for safer operation. Additionally, the tower design fits office, server room, and IT environments easily. Specifications: 6KVA online double conversion UPS technology Internal 16x12V/9Ah rechargeable batteries LCD display for real-time monitoring Pure sine wave output for stable power delivery Overload and short-circuit protection system
The PROLINK PRO700 Line Interactive UPS is designed to provide reliable backup power and protection for computers, networking devices, and other electronic equipment. It helps maintain stable operation during power interruptions and voltage fluctuations. With a 650VA capacity and 360W output power, this UPS provides practical power support for home and office environments. Additionally, its line-interactive design with AVR technology helps regulate voltage and improve power stability. The PRO700 supports a wide input voltage range from 140V to 300V AC. Moreover, it automatically senses 50Hz or 60Hz input frequency, allowing compatibility with different power environments. The UPS provides simulated sine wave output during battery mode and sine wave output during AC mode. Furthermore, the fast transfer time helps reduce interruptions when switching to battery operation. The built-in 12V 8.2Ah battery provides backup power for connected devices during outages. Therefore, users can safely save work and shut down equipment during unexpected power failures. The PROLINK PRO700 includes protection features against short circuits, overloads, discharge, and overcharge conditions. In addition, its intelligent battery management helps improve battery protection and lifespan. The compact design makes the UPS suitable for desktops, network equipment, and small office setups. Also, its low noise operation allows comfortable use in different working environments. The PROLINK PRO700 Line Interactive UPS combines voltage regulation, backup power, and essential protection features in a compact solution. As a result, it provides dependable power support for everyday electronic devices. Specifications: Capacity: 650VA / 360W Input Voltage Range: 140V–300V AC ±5% Battery: 12V / 8.2Ah sealed lead-acid battery Output Waveform: Simulated sine wave (Battery Mode) Protection: Short circuit, overload, discharge, and overcharge protection
Hawk Ups 1500VA Input: Phase: Single + GND. Voltage Range: 165-275V/ 82V-138V. Frequency: 50/60Hz +- 10%. Output: Voltage Range: 220/230/240/110/120V +- 10%. Wave Form: Sine wave ( Mains), Square Waves (inverter). Frequency: 50/60Hz +- 1% (Batter Mode). Crest Factor: 3:1. Transfer time: <10ms. Protection: Energy rating: 320 Joules Instantaneous response. Test Standard: IEEE 587 Cat. A&B. Noise Filtering: EMI/RFI: Full Time Suppression. Communication: RS232 or USB with PC monitoring software and cable (optional). Battery: Type: Sealed Lead-acid. Quantity: (x2) 12V8A. Backup Time: 15-20min depends on the load.
Presentation High quality, Double-conversion On-line UPS designed for essential power protection needs even in the most unstable power conditions. Lead time Usually in Stock General provided equipment Basic UPS signalling RS-232 cable CD with software Rack mounting brackets User manual USB cable Number of tare power 25 W Number of power module free slots 0 Number of power module filled slots 0 redundant No UPS size WS Physical number of rack unit 5U colour Black depth 61.5 cm height 21.95 cm net weight 78 kg USB compatible Yes width 43.8 cm Input network frequency 40…70 Hz number of input connectors 1 hard wire 3-wire (1P + N + E) input voltage limits 110…300 V adjustable (half load) 176…300 V inputvolt_other 220 V 240 V input voltage 230 V Output rated power in W 6000 W Maximum configurable power in W 6000 W output frequency 50/60 Hz +/- 3 Hz sync to mains outputvolt_other 220 V 240 V crest factor 3 : 1 UPS type Double conversion online Wave type Sine wave output connector type Hard wire 3-wire (H N + E) 1 bypass type Internal bypass (automatic and manual) curve equation Efficiency curve load maximum 100 % curve X-axis maximum 100 % curve X-axis minimum 0 % curve X-axis title Load curve X-axis units Percentage curve Y-axis maximum 100 % curve Y-axis minimum 50 % curve Y-axis title Efficiency curve Y-axis units Percentage efficiency 94 % (full load) graph display 1 half load runtime 00:10:00 3000 W output voltage 230 V Maximum configurable power in VA 6000 VA rated power in VA 6000 VA Conformance product certifications CE standards IEC 62040-1-1 IEC 62040-1-2 Environmental ambient air temperature for operation 0…40 °C relative humidity 0…95 % non-condensing operating altitude 0…3000 m ambient air temperature for storage -15…60 °C Storage Relative Humidity Non-condensing 0…95 % storage altitude 0…15000 m acoustic level 55 dB show note OP temperature No IP degree of protection IP20 Batteries & Runtime battery type Lead-acid battery number of battery filled slots 0 number of battery free slots 0 Battery recharge time 3 h additional information Configurable for 220 : 230 or 240 nominal output voltage liquid value 0 battery curve D Battery power in VAH 1512 VAh runtime battery option SRV240RLBP-9A 1 3024 VAh SRV240RLBP-9A 2 4536 VAh SRV240RLBP-9A 3 6048 VAh SRV240RLBP-9A 4 7560 VAh SRV240RLBP-9A Communications & Management free slots 1 control panel Multifunction LCD status and control console alarm Alarm when on battery : distinctive low battery alarm : overload continuous tone alarm Emergency power off Yes manufacturer link 1 YEAR WARRANTY
Specifications : Le grand ups keor spx 2kva 2000va 1200w ups 2kva 1 year warranty
The Beco GP1200 1200VA 720W UPS delivers reliable power backup for home and office electronics. It keeps key devices running during outages. This helps prevent data loss and sudden shutdowns. Users gain peace of mind knowing devices stay protected. Moreover, the Beco GP1200 1200VA 720W UPS features 1200 VA capacity and 720 W output power for strong support. It handles computers, routers, modems, and monitors easily. Large systems stay powered long enough to save work. Performance stays stable and secure. In addition, the UPS includes built-in surge protection for reliable defense against voltage spikes. It guards appliances from unstable power conditions and electrical surges. This adds extra safety during storms or fluctuations. Protection stays consistent over time. Furthermore, the Beco GP1200 1200VA 720W UPS offers automatic voltage regulation without manual settings. It smooths voltage drops and spikes quickly. This helps connected devices run smoothly. Reliability increases in daily use. Also, the UPS provides battery backup when power fails. You can finish tasks and save important files before turning off systems. This reduces the risk of data corruption. Backup power feels dependable. In addition, the Beco GP1200 1200VA 720W UPS includes clear LED indicators for power and battery status. You can check performance at a glance. This helps monitor conditions with ease. Users stay informed during operation. Moreover, the UPS includes multiple output sockets for connecting more devices at once. This improves flexibility for busy workstations and entertainment setups. You can protect multiple electronics with one unit. Furthermore, the Beco GP1200 1200VA 720W UPS supports easy installation and quick setup. Users can connect devices without complicated steps. Setup remains simple for all users. Also, the compact design fits neatly on desks, shelves, or cabinets without taking much room. It blends well into home and office spaces. Portability stays practical. Overall, the Beco GP1200 1200VA 720W UPS delivers strong battery backup, surge protection, and smooth voltage regulation. It guards electronics and ensures uninterrupted use. This UPS is ideal for users seeking reliable, everyday power protection. Specifications: 1200VA, 720W, LED, Plastic Case Input: 140-290 VAC Output: 230VAC 50/60HZ 12V 7.5AH *2pcs, Universal Socket *4 + EU Plug With AVR, Bypass output Overload and short circuit protection
APC UPS Accessories SMX48RMBP2U APC Smart-UPS X-Series 48V External Battery Pack Rack/Tower for SMX1000, SMX1500, SMX750
APC UPS Accessories VGL9901I Easy UPS Dry Contact Card/Relay I/O card, 1 – 10KVA (SRV models)
The PROLINK PRO1501SFCU Super Fast Charging UPS is designed to provide reliable backup power and voltage protection for computers, networking equipment, gaming systems, and office electronics. It helps keep essential devices operating during power interruptions and unstable electrical conditions. The UPS provides a 1500VA capacity and uses line interactive technology with Automatic Voltage Regulation (AVR). Additionally, AVR helps stabilize input voltage fluctuations and delivers safer power to connected devices. The PROLINK PRO1501SFCU features super-fast charging technology that significantly reduces battery recharge time after a power outage. Moreover, this feature ensures the UPS becomes ready for the next interruption more quickly. The UPS includes multiple protection functions against overload, short circuit, surge, and battery discharge conditions. Furthermore, these protection features help improve the safety and reliability of connected equipment. The PROLINK PRO1501SFCU includes LED status indicators and audible alarms for easier system monitoring. Therefore, users can quickly check operating conditions and power status during daily use. The compact design makes the UPS suitable for homes, offices, and small business environments. In addition, it provides dependable backup support for desktop PCs, routers, NAS devices, and CCTV systems. The PROLINK PRO1501SFCU Super Fast Charging UPS combines backup power, rapid battery charging, AVR technology, and advanced protection features. As a result, it provides a practical and reliable power protection solution for everyday applications. Specifications: Capacity : 1500VA Input : 140-230VAC Output : 230VAC Transfer Time : 2ms Battery Type : 12V Backup Time : 40 Min (Depending on the load) Part Number : PRO1501SFCU
APC UPS Accessories SRVRK2 APC Easy UPS RAIL KIT, 900MM, 1 – 10KVA (Rackable SRV models)
PCE VX Online 1 KVA 800W Internal Batteries Double Conversion Online- Pure Sine Wave Model VX 1K Input Rating Voltage Frequency Voltage range Power Factor THDi 1000VA 220V, 230V, 240V, 1Ø 2Wires 40~70Hz 176-300 VAC at 100% load, 110-300 VAC at 50% load >99% <5% Ouput Active Power @ PF=0.9 Voltage (on battery) Frequency (on battery) Transfer Time Efficiency UPS Design Technology Output Wave Form Total Harmonic distortion (THD) Crest Factor 900W 220V, 230V, 240V, +/-1% (selectable output voltage), 1Ø 2Wires 50/60 Hz +/-0.2% 0 ms 93% Online double conversion design Pure Sinewave ≤3% (linear load), ≤5% (non linear load) 3:1 Protection Overload Protection Short Circuit Protection 110% for 10min, 130% for 1min, >130% for 3sec UPS output cuts off immediately using input fuse/circuit breaker protection System Display LCD indicators Load level, Battery level, AC mode, Battery mode, Bypass mode, and Fault indicators Alarm Battery mode Low battery Overload Fault Sounding every 4 second Sounding every second Sounding twice every second Continuously sounding Battery Battery Type Typical Recharge Time DC Voltage Charging Current Back up time(1/2 Load) 12V 9Ah 4 hours to 90% Full capacity 24VDC 1A 10~15 min depending on load Communication USB or RS-232 SNMP* Compatibility Interface with power management software Power Management from SNMP manager and web browser Supports Windows family, Linux, Unix and Mac Physical W x D x H mm Net Weight Kgs(lbs) 145x282x220mm 9.8Kg(21.6lb) Environment Operating Temperature Storage Temperature Altitude Audible noise Relative Humidity 0 – 40 °C / 32 ~ 104°F -20 ~ 50°C / -4 ~ 122°F 1,500 meters max <50dBA at 1 Meter 20 to 90% humidity (non-condensing) Standards & Certifications Performance Safety EMC (EMS / EMI) Design, production, & services Environment Marking & Certifications EN50091-3/IEC 62040-3 UL 1778, CE, EN 50091-1,EN 60950 (RD/), IEC 60950 IEC 61000-4-2/-3/-4/-5/-6/-8/-11, IEC 61000-3-2/-3,FCC Part 15, CISPR 22, EN 50091-2/IEC62040-2 Class A, EN 55022/B,FCC 47 part 15 – Subpart B – ISO 9001 ISO 14001 certified company CE, TUV/GS, UL, cUL, c-Tick
Specifications : Le grand ups keor spx 600va 310300 UPS 600va
Specifications : Output Max Configurable Power (Watts) 6.0kWatts / 6.0kVA Output Voltage Note Configurable for 220 : 230 or 240 nominal output voltage Efficiency at Full Load 94.0 % Output Voltage Distortion 1 % Output Frequency (sync to mains) 50/60 Hz +/- 3 Hz Sync to mains Other Output Voltages 220 V, 240 V Load Crest Factor 3 : 1 Topology Double conversion online Waveform type Sine wave Bypass Internal bypass (automatic and manual) Input Input frequency 40 – 70 Hz Auto sensing Input voltage range for main operations 110 – 300 Half load, 176 – 300 Full loadV Efficiency at Full Load 94.0 % Other Input Voltages 220 V, 240 V Batteries & Runtime Battery type Lead-acid battery Typical recharge time 7hour(s) Nominal Battery Voltage 192 V Expected Battery Life (years) 3 – 5 Battery Charge Power (Watts) 235 Watts Runtime View Runtime Graph Communications & Management Interface Port(s) DB-9 RS-232, USB Control panel Multifunction LCD status and control console Audible Alarm Alarm when on battery : distinctive low battery alarm : overload continuous tone alarm Emergency Power Off (EPO) Yes Available SmartSlot™ Interface Quantity 1 Surge Protection and Filtering Surge energy rating 600Joules Physical Maximum Height 173MM, 17.3CM Maximum Width 438MM, 43.8CM Maximum Depth 710MM, 71.0CM Net Weight 61.0KG Shipping weight 71.0KG Shipping Height 1232MM, 123.19CM Shipping Width 600MM, 60.0CM Shipping Depth 836MM, 83.6CM Color Black Environmental Operating Temperature 0 – 40 °C Operating Relative Humidity 0 – 95 % Operating Elevation 0 – 3000meters Storage Temperature -15 – 60 °C Storage Relative Humidity 0 – 95 (Non-condensing) % Storage Elevation 0 – 15000meters Audible noise at 1 meter from surface of unit 55.0dBA Online thermal dissipation 1172.0BTU/hr Protection Class IP20 Conformance Approvals CE, EAC, EN/IEC 62040-1, EN/IEC 62040-2, TISI Standard warranty 2 years repair or replace Sustainable Offer Status RoHS Compliant Warranty : 1 year https://www.apc.com/shop/dk/en/products/APC-Easy-UPS-On-Line-SRV-6000VA-RM-230V-with-Rail-Kit/P-SRV6KRIRK
PCE CASA 1KVA inverter is a compact off-grid power solution designed for home and small office backup use. It helps keep essential devices running during power cuts, such as routers, lights, and small electronics. In addition, it provides pure sine wave output. Therefore, it delivers clean and stable power for sensitive devices. Moreover, it supports AC mains and generator input, which makes it flexible in different power conditions. Furthermore, PCE CASA 1KVA inverter includes smart battery charging control. As a result, it improves charging efficiency and helps extend battery life. It also supports automatic restart after power recovery, ensuring continuous operation. In addition, it includes built-in protection features. Therefore, it helps protect against overload, short circuit, and overheating. Moreover, it supports a cold start function for direct battery operation when no grid power is available. Overall, PCE CASA 1KVA inverter delivers reliable backup performance, stable output, and essential protection for everyday home and office energy needs. Specifications: 1KVA capacity for home and small office loads Pure sine wave output for stable device operation AC mains and generator input support Smart battery charging control for efficiency Built-in protection against overload and short circuit
