reference:

The charge indicator serves also as an indication about the charge status.

0-50%: Flashes once per second

50-75%: Flashes twice per second

More than 75%: Flashes 3 times per second

100%: Continuously on

attention:

• We recommend charging the battery pack in temperatures between 10 deg C and 30 deg C (50 deg F and 86 deg F). The charging time will vary depending on the surrounding temperature and the battery's initial charge condition.
• Charging time varies according to the charging condition.
• The CH-910 can charge two battery packs consecutively. You can also power the camcorder by connecting the CH-910 with charged battery packs to the camcorder. When you attach two battery packs, a battery pack can be exchanged without interrupting the power supply.

• Use of genuine Canon accessories is recommended.

This product is designed to achieve excellent performance when used with genuine Canon accessories. Canon shall not be liable for any damage to this product and/or accidents such as fire, etc., caused by the malfunction of non-genuine Canon accessories (e.g., a leakage and/or explosion of a battery pack). Please note that this warranty does not apply to repairs arising out of the malfunction of non-genuine Canon accessories, although you may request such repairs on a chargeable basis.