8PCS 2A 5V Charge Discharge Integrated Module 3.7V 4.2V for 18650 Lithium Battery Charging Boost Mobile Power Supply Charge and Discharge Protection Converter Protection PCB Board Module
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Availability:
Only 10 left in stock, order soon!
Arrives
Monday, Sep 1
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Features
- MCU users, if you accept a small load KEY can be connected to the microcontroller about 20s to provide a low level allows the module to continue working. Trigger mode: low level trigger (ground).
- 4 in 1 Charging / Discharging / Lithium Battery Protection / Battery Level Indicator Module. Lithium battery protection function: over-current, overvoltage, over-temperature, short circuit protection.
- The output opens automatically at the first time the load is connected.If the load is less than 50MA, automatically close the output after 30 seconds;If the load is greater than 50MA, the output opens automatically.
- High Power High Efficiency: Discharge efficiency up to 96%. In discharge mode (The charging mode KEY function is invalid), trigger the KEY port once to open the output; continuously trigger the KEY port twice to close the output.
- Can be applied to solar panel turning to mobile phone charging, car charging retrofit, driving recorder power supply, household power supply, intelligent plugging transformation, fast charging adapter, etc.
Brand: UMLIFE
Material: Copper
Product Dimensions: 0.98"L x 0.63"W x 0.16"H
Number of Ports: 4
Item Weight: 20 Grams
Package Dimensions: 3.46 x 2.72 x 0.59 inches
Item Weight: 0.705 ounces
Item model number: UMLIFE-001
Date First Available: December 27, 2019
Manufacturer: UMLIFE
Country of Origin: China
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Sep 1
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
I tried using the load output on this but it would just shutdown like it's overloaded. Using 4 small individual leds in parallel. So I can't use that part of the circuit, but charging seems to work fine.
Reviewed in the United States on December 19, 2023 by Patrick
I bought these to use with 3.7V li Ion batteries and Arduino micro controllers. It's a nice clean circuit board that is well labeled and works very well. Removing my 5V source (USB in my case) and letting my arduino get 5V from the battery/boost circuit appeared to have no switchover time. Powering the circuit while charging the battery also worked fine. It's one of the best tiny boost and charger boards I've found and I plan to use them going forward for all my circuits.
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Reviewed in the United States on April 14, 2021 by Cecil Clontz
I've used these modules in many battery applications. They charge the batteries just fine, the voltage is boosted to 5V with no problems. The button to turn it on an off works fine. I use the solder pad for the button to my microcontrollers. There are two issues that make it quite unusable. First, the output gets cut off too early, before the battery falls below 3.5V. Second is that the module consumes power even while off. a 2200mAh battery will be drained completely in just 3 days with nothing attached to the module. Meter shows fluctuating 2.2-3V on the output while the module is off. So in short, if you use these to make a battery charger for 18650 of lipo packs, they will work perfectly. as a controller for any battery powered circuits, these will not work.
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Reviewed in the United States on November 12, 2022 by Edge
Worked well for raspberry projects would recommend
Reviewed in the United States on May 16, 2024 by Trever T.
Great little charge, protection and boost board. No short circuit protection so be warned they are easy to fry but so inexpensibe it really doesn't matter.
Reviewed in the United States on February 1, 2021 by Adam
It works great, but it turns off. So it's useless.
Reviewed in the United States on December 20, 2023 by Glen B.
Work exactly as advertised. My solar light projects are now doing great with these new cards!
Reviewed in the United States on July 1, 2023 by Mayeaux
Does exactly what I needed. I got this to charge a battery pack, as the TP4056 (1A) was too slow. The 2A charging rate was spot on. I did not use the discharge function, so I am unable to comment on that.
Reviewed in the United States on June 1, 2022 by Long