Rechargeable batteries in the 2032 (20mm wide, 3.2mm deep) package are generally lithium ion chemistry. This means that, depending on the circuitry they are no

Rechargeable batteries in the 2032 (20mm wide, 3.2mm deep) package are generally lithium ion chemistry. This means that, depending on the circuitry they are not always drop in compatible since the voltages and discharge curves differ