Robot Pi Shop

TP4057 1A 3.7V Lithium Battery Charging and Discharging Module

$0.50
Quantity

This product is suitable for DIY, it should be the smallest and thinnest product with the same function (compared with other similar products much smaller, also thin 0.6mm) is very important for the modification of small electrical equipment.   And half hole positioning, easy to fix.

Applications:

  1. lithium battery charging
  2. small electrical circuit
  3. Add charging ports to tablets.

Features:

  • Small volume.   It's smaller than its peers.
  • 5-6V power supply, suitable for single lithium (parallel unlimited), default current 1A.
  • Suitable for all types of 3.7V lithium batteries, including 18650 and accumulator batteries.
  • With overrush and overdischarge protection, overdischarge protection 2.4V, charging cut-off voltage 4.2V/ 4.35V optional!

Function:

  • When the charging current reaches the final floating charging voltage and drops to 100mA, the charging cycle will be automatically terminated.
  • ▼ When the battery voltage drops below 405V(roughly corresponding to 80% to 90% of the battery capacity), the charging cycle starts again.
  • When the battery voltage is lower than 2.9V, the battery will be pre-charged with 100mA current.
  • With protection plate, over voltage protection, over discharge protection, over current protection.   
  • Overdischarge protection value: 2.4V
  • Overcurrent protection value: 4A.

 

Tip: The first use needs to connect the power supply to activate the protection board!!

image

Usage:

The connection is marked according to the figure above (the part with the same color is physically connected).   Port C input or connection input can be used.   The battery cannot be connected in series, but can only be connected in parallel.   The thread needs to be welded, the thread should not be too thin,Otherwise it won't work properly.   Batteries cannot be reversed.