An extra battery would extend your recording time by another hours. Compatible with CM-7500 3.7V, 900mAh Warning: NOT compatible with CM-7000, CM-7100, CM-7200 Using Tips: To reach the best performance, please full charge and discharge your new battery for 4 to 5 times. Avoid overcharge and over discharge. Please stop charging when the battery is 100% charged Please do not charge the battery over 24 hours, overcharging may shorten its lifetime. Unplug the charger after use. Re-charge the battery once every three months when it is not in use Do not use the product in high temperatures. Warranty: 1 year warranty and 30 days money back guaranty
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