Battery Temperatur Measurement

EZ Battery Reconditioning Method

How to Recondition a Battery

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The battery temperature is measured during charging. The BTEMP pin to the battery is pulled up on baseband by a 47 kohm resistor to logic supply voltage, 3.2V. The voltage on the BTEMP pin is a function of the battery pack temperature. Auxiliary A/D channel 3 is used for this purpose. Inside the battery pack there is a 47 kohm NTC resistor to ground. The A/D converter value can be calculated from the following formula:

A/D = RNTC/(RNTC+47 kohm)x1023

where RNTC is the value of the NTC resistor inside the battery pack.

The relation ship between different battery temperature, BTEMP voltage and A/D converter values are shown in following table.

A/D Converter Values for Different Battery Temperatures

Bat. temp. NTC value BTEMP voltage A/D conv. value


1 kW

0.06 V



74S.60 kW

2.96 V



164.96 kW

2.4S V



47 kW

1.S8 V



16.26 kW

0.81 V



7.78 kW

0.4S V


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DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

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