9 Best
Battery Backup Circuits
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Product Highlights- 【2 usb c output & input 】with one usb-c input ,also configured two usb-a output ports that recognize all connected devices and distribute load up to 5v 2.4a effectively. therefore our phone battery power bank can work with not only all the phones, tablets but your smaller devices like airpods, bluetooth headphones, fitness trackers, smart watches, heated vest etc.
- 【reliable li-polymer cell】 a high-quality li-ion battery included into the battery bank helps to charge it safely and prevents over-voltage, over-charging, over-current, and short circuits, among other things. it won't become too hot or put a lot of strain on your phone's battery. more importantly, these phone charger battery pack portable are also airline-approved
- 【2 pack of 10000mah portable charger】it is portable battery with 10000mah capacity of each power bank which would be more than enough for 3 days trip. each of them can fully charge your iphone 8 3 times, iphone x 2.6 times, iphone 7 plus 2.3 times, or a galaxy s8 2.2 times.
- 【small & slim】these power banks are popular for travel since they are exceptionally tiny for a 10000mah power bank, weighing just 218g and measuring only 12mm thick. built-in 2 led flashlights perfect for outdoor enthusiasts. they come in handy on any road trip, allowing you to take them with you wherever you go
- 【what you get】2 * 10000mah power bank; 2 * charging cable ; 1 * user manual. we provide 24 hours friendly customer service and 12 months warranty guarantee.
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Product Highlights
- Positive and negative polarity will burn the car computer.
- Obd optimum alternating car computer power supply adapter connector memory device off battery replacing without disconnection.
- With a red clip to connect the backup battery cathode, black to connect the negative.
- Plug the red light, and then insert the car obd plug, this time has been issued by the sound of drops, indicating normal connection.
- For a good battery, the first release of the tools of the red clip, if also drops at this time ring, indicating successful, if there is no sound, indicating that the fuse burned.
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Product Highlights
- 【mini portable charger with lcd digital display】lcd power display can accurately keep track of remaining power, if it does not show up,pressing once on the power button to turn it on.
- 【safe and compatibility battery pack】 10000mah portable charger external battery power bank.reliable a+ lithium-ion battery, built-in multi-protection system protect the power bank against over current and short circuit. it'll automatically turn itself off when short circuit or overloading occurs. safe and provides you an ultra-long product lifespan.
- 【upgrade 10000mah power bank】high capacity ultra compact portable charger can charges an galaxy s8 2.5 times, an iphone 7 3 times (it depends on the capacity of your mobile phone) suitable for a business trip or other outdoor activities.
- 【high speed charging external battery】 jonkuu power bank has dual usb ports, combined with dual 5 v / 2.4 a output, quickly provide enough power for your phone and other devices.
- 【no risk purchase】36 months quality assurance. quick customer service, answer and solve all your concerns about the product within 24 hours;jonkuu is a registered trademark, we are committed to providing you with the ideal of high quality products and services.
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Product Highlights
- 【dual 2.4a outputs+ micro and type-c input】dual usb output and input speed can reach up tp 2.4 a ,offering amazing fast charge. can charge any combination of devices at full speed.
- 【safety protection charger pack 】- reliable a+ lithium-ion battery, built-in multi-protection system protect the power bank against over current and short circuit. it'll automatically turn itself off when short circuit or overloading occurs.
- 【portable power bank with high capacity 】 high-density 10000mah lithium battery, can charges an galaxy s8 2.5 times, an iphone 7 3 times and other smartphones multiple times. the light indicator keep you informed of remaining capacity.
- 【 ultra compact external battery pack】one of the smallest and lightest 10000mah portable charger(94.5x62x22.2mm/3.7x2.44x0.87inch). super convenience for carry away.
- 【warranty and support】if you have any questions, feel free to contact us, we will reply you within 24 hours. jonkuu is a registered trademark, we are committed to providing you with the ideal of high quality products and services.
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Product Highlights
- Built-in high capacity lithium battery provide long backup time for single device during power failure. the 22.2wh/6000mah power bank can store power of operation.
- Suitable for multiple devices, such as wifi routers, modem, monitor cameras, cpe and so on..
- Dc input 12v, single output 12v 2a, small size but provide stable voltage and current output.
- Clear working status indicator,over-charge, over-current and short-circuit multi-protective function.
- Charging guide: connect a suitable dc 12v adaptor to the ups, please check whether the output voltage of your adaptor is 12v ?
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Product Highlights
- ☀ the cigarette plug option only works if it has constant power when the key is out of the ignition. when you start the car, please remove the solar panel from the car battery
- ☀ comes with the cigarette lighter adapter, 1 pair of battery clips and 4pcs pvc suckers. unique design-high quality clips to prevent short circuit
- ☀ 10w 12v solar car battery charger is the perfect trickle charger/maintainer for 12v batteries of cars, motorcycles, boats, snowmobiles, tractors etc
- ☀ charging 12v rechargeable batteries in emergency, suitable for vehicles in outdoor work or travel or camping training. easy to install and completely maintenance-free
- ☀ environmental protection and energy saving, built-in blocking diode to prevent reverse discharge, not only maintains the battery lifetime but also extends its usage life
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Product Highlights
- Multiple safety protection: reverse polarity protection (wrong polarity connection prompt), spark-proof, overvoltage protection, overcurrent protection, short circuit protection. built-in a fan to prevent overheating while charging. secures safety during charging.
- Intelligent charging: the 3-stage microprocessor controlled charging process provides the best possible application and enables efficient battery charging. the charger will auto-off when fully charging. the lcd digital display will carousel shows temperature, charging voltage, current, and battery power. note: the screen is covered with a protective film that needs to b...
- Wide range of applications: the car battery charger is suitable for 12v and 24v lead-acid battery from 6ah-150ah (12v), 6ah-100ah (24v), including agm, calcium, gel, mf, sla, vrla, wet batteries. ideal for charging and repairs cars, trucks, motorcycles, lawn mowers, boats, atv, suv, etc. input voltage: 110-265v.
- 6 charging modes: the smart charger can automatically detect outside temperature, then auto-switch between summer or winter mode and self-appropriate raise and reduce the charging voltage. car/truck mode (12v 8a / 24 6a) for fast charging big batteries, motorcycle mode (max 1.5a) for small batteries, agm mode for agm, and calcium batteries, repair mode for repairing old...
- Advanced repair mode: built-in advance battery repair mode to help to recover old/idle batteries and extend battery life. the high frequency and low-frequency pulse technology has good repair and activation effects. note: it can not activate a dead battery or repair a battery that is damaged seriously.
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Product Highlights
- Multiple protection: overvoltage protection, overcurrent protection, short circuit protection. built-in a fan to prevent overheating while charging. reverse polarity protection, wrong polarity connection prompt, spark-proof.
- 6 charging mode: the smart charger can automatically detect outside temperature, then auto-switch between summer or winter mode and self-appropriate reduce or raise the charging voltage. car/truck mode (12v 8a / 24 6a) for fast charging big batteries, motorcycle mode (max 1.5a) for small batteries, agm mode for agm, and calcium batteries, repair mode for repairing old b...
- Wide application: 8 amp battery charger maintains and charges all type of 12v and 24v lead-acid battery from 6ah-150ah (12v), 6ah-100ah (24v), including agm, gel, calcium, mf, sla, vrla, wet batteries. perfect for charging and repairing cars, trucks, motorcycles, lawn mowers, boats, suv, atv, etc.
- Easy to use and visualized charge: the large lcd display the charging and battery status; battery power indicator, charge voltage and current, inside temperature, battery charging percentage, summer mode, winter mode, etc. more convenient to use.
- Pulse repair function: the advance repair mode can help to recover old/idle batteries and extend battery life. the high frequency and low-frequency pulse technology has good repair and activation effects. we provide 12-month warranty for this item, please feel free to contact us.
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Product Highlights
- 【product parameters】size: 8.5 × 4.2 × 2.5cm.weight: 82g
- 【4-in-1 multifunction tester】the power analyzer can easily calculate the voltage, current, power, discharge amount and discharge time.
- 【measurement range】working voltage: 4.8-60v, product current: 0-200a, resolution 0.01a, continuous current 50a. product voltage: 0-60v, resolution 0.01v. capacity accumulation function: 0-65ah. power accumulation function: 0-6554wh,
- 【led screen with backlight】0.1a stepping high precision, high linearity, with backlight function
- 【wide application】the battery consumption performance monitor is suitable for rc hobby,dc circuits,solar system,battery backup systems.
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