Sealed lead-acid batteries are cost-effective and can provide a sizable amount of
energy per battery weight. However, the energy storage potential of the batteries
does decay over time.

Refer to these web sites for more information on sealed lead-acid batteries:

http://www.houseofbatteries.com/HowTo/SLA.htm
http://www.devicelink.com/mem/archive/03/10/003.html

Battery charging

Plug the battery system into an AC power source for charging. The LED turn yellow
during the charging phase. Also, the LED turns green at 80% of total charge capacity.

See specifications on

battery modes

and

power consumption efficiency

for

more information.

Charge time

The charging controller board is capable of independently charging the batteries
while powering the attached system. This ensures that the charge rate of the
batteries is the same whether a load is connected or not. Charge time varies
depending on the age and usage of the battery. Typically, as a battery ages, it
tends to accept less charge; that is, the charge time decreases. Consequently,
as the battery accepts less charge, the battery usage time decreases.

Charge Time

Capacity of Charge

3 hours

80%

4 hours

90%

6 hours

100%

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