(Higher volt lower current is required)
DO NOT reverse battery polarity ， DO NOT charge
AAs
。
Diagram of Battery replacement：
Screw down three of them in both sizes。
=====================================
AA battery is better for outdoor use。
Lithium battery is long life for use. But will lose its capacity
for long keeping. Both of them effect by low temperature
AAs is advised for occasionally use.
Lithium is recommended for regular use.
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