Battery compartment for 4x 18650 batteries and its protection and charge control circuit.

by J_RPM, published

Battery compartment for 4x 18650 batteries and its protection and charge control circuit. by J_RPM Jan 20, 2018
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546Views 63Downloads Found in Engineering


Change the Nickel-Cadmium batteries for other Lithium Ions, in an electric drill. The original battery pack is composed of 12 elements of Ni-Cd (1.2V), providing the set with a nominal voltage of 14.4V. When using Li-ion batteries (3.7V), it is only necessary to install 4 modules. 4 batteries of type 18650 are used, with a capacity of 9800 mAh (depending on the manufacturer). Although the real capacity of these batteries is much lower, these batteries are perfectly valid for powering an electric screwdriver. The protection and charging module YH11047A is installed inside the battery pack.

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Anet A6


Doesn't Matter








The batteries can be soldered with cables inside the support, or place springs as in a normal battery holder.

How I Designed This

Renew the battery pack, in an electric drill

Information in spanish

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