Li-ion cell charger TP5100, 2A 1-2S

Product detailed description

This model is designed for charging lithium batteries using constant current/constant voltage (CC/CV). It does not have overcurrent and short circuit protection, we do not recommend using it with a battery that does not have integrated protection.

Protection functions:

This module uses TP5100 Li-Ion charge controller IC

• Constant current and constant voltage control for charging the connected lithium battery,
• Overvoltage protection - the module will safely charge the battery up to 4.2V (8.4V),
• Recharging (battery reconditioning) - if the voltage level of the connected battery is less than 2.9V (5.8V), the module will recharge with 100mA current until the battery voltage reaches 2.9V (5.8V) again, at which point the charging current increases from linear to the configured charging current.
• By connecting a solder jumper SET 8,4V (2 cells in series, does not provide balancing !)

The module includes one two-colour indication LED. Red color indicates charging. The green colour indicates a complete charge.

The charging current can be configured externally with 2 resistors. The datasheet for the TP5100 (link in the resources section below) includes a table and equation for the resistance value that will be used to configure the different charging currents.

The module consumes a very small amount of current (µA) when connected to a battery. It's a good idea to leave it connected to the battery for a longer period of time. However, if you do not plan to charge the battery for 4 months, we recommend disconnecting the module from the battery.

You can connect two lithium battery cells to create the equivalent of a single battery with a total capacity twice that of the individual cells. However, we do not recommend connecting more than two cells at a time to this module. Also it is possible to charge 2 cells in series, it does not provide balancing !

Specifications:

Charging chip	TP5100
Charging method	CC/CV
Input voltage	5~15.0V
Constant charging current	2A (adjustable)
End of charge (Voltage)	4.2V(8.4) ±1.5%
Slow charging (Battery Reconditioning)
Boundary to	2.9V(5.8V) ±0.1V
Current	100mA ±20mA
Dimensions
Length	25mm
Width	17mm
Weight	2g

Wiring

Included in delivery:

• 1pc Li-ion cell charger TP5100, 2A 1-2S

Sources:

TP5100 datasheet

Notes:

• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustration purposes only and may sometimes differ from the actual appearance of the item. However, this does not change its basic properties.
• Due to the nature and characteristics of Lithium Ion batteries, Laskarduino is not responsible or liable for any damage, defects, injury, fire, skin burns or any other consequences that may occur from improper or incorrect use of this module or any battery, device or item. By purchasing this product you accept the previous.
• You have to be careful when connecting two cells in parallel. Both cells must have the same voltage. If one cell had a lower voltage, it would discharge to its lowest possible discharge limit. If possible, both cells should have the same voltage. In this case, the tension will be balanced. If the voltage of the two cells is very different, the cell may overheat or worse. When charging two cells in parallel to this module, the charging current of each cell is half of the total charging current of the module, i.e. each cell has the same voltage level.