Panasonic (Sanyo) NCR20700B Li-Ion Rechargeable Battery

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This is a 4,250 mAh Panasonic (previously Sanyo) lithium-Ion rechargeable 3.7V nominal, 4.2V fully charged 20700 (20mm x 70mm) case size battery. I only recommend Panasonic, LG, and Samsung as they are well known for having accurate and consistent charge capacities (C) in milliamp * hours (mAh).This battery is rated typically (average) to 4,250 milliamp * hour (mAh) and is about 1,050 mAh (32.8% more) additional energy compared to the NCR18650B rated at 3,200 mAh.Please see my other Panasonic NCR18650B 3200 mAh battery, if you need that case size or capacity.**WARNING** : These batteries have NO OVERCURRENT PROTECTION and can discharge over 15 Amps of current causing excessive internal overheating and possibly igniting or exploding. Be sure to design in or use a circuit that limits the current (e.g. fuse or circuit breaker) FOR EACH BATTERY to prevent such an occurrence !!https://www.greentechmedia.com/articles/read/lg-chem-battery-cell-mcmicken-arizona-fire**WARNING** : Avoid Ultrafire, Ultralife, Surefire, Trustfire and other Chinese (country of origin) made 18650s as they are *notoriously* known as FAKE ratings and inconsistent capacities !! These are the ones that are typically sold on ebay, amazon, and allibaba. Buyer beware !!https://www.youtube.com/watch?v=qMZuHMlRw_0https://www.youtube.com/watch?t=65&v=eOshOXcSkDAhttps://www.youtube.com/watch?v=j4RfYufeFhc