Re: Battery type detection - rechargeable or not?


"GregS" <szekeres@xxxxxxxx> wrote in message
news:e6bqpn$ag1$1@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
In article <1149837775.144734.265450@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
"siliconmike" <siliconmike@xxxxxxxxx> wrote:
I'm building a battery charger to charge a single AA size NiMh/Cd using
a micro.

How to detect if the user inserted a rechargeable battery?

How to detect polarity of battery (if it is flat) ?

Most all flat batteries are shorted. Perhaps charging a battery
for a short time and measuring the voltage. Near 1.2 volts, likely
to be a rechargable type.

Add: severely limit the charging current, while monitoring voltage and
temperature.



.

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