Caution flat positive

Caution flat positive

Panasonic NCR18650B_X4 Li-Ion battery (3.7V, 3400mAh, 4-pack) incl. Battery box (accessory)
Buy at Amazon.com

Customer Review

Seem OK.
Not clear that they have a positive and flat batteries are unprotected.
For the price probably normal, novice'm in the field.
When charging only slight warming.
Due to the flat positive bit shorter.
Requires the device enough spring force or greater pressure springs.

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