Cameron Sino 800mAh Li-ion Battery Replacement Battery for POLAROID M737 M737T T737 High capacity compact volume. Compatible with POLAROID M737 M737T T737; Build-in PCM offer multi-protection: short-circuit protecion, over-charge protection, over-discharge protection. No Memory Effect: Can be partially charged without reducing battery capacity and shorten the battery life Cameron Sino has more than 10 years battery R&D experiences.