186503400MAH lithium battery with protection board (Note: When the flashlight circuit does not have a protection function, it is strongly recommended to use a battery with a protective plate; it is also recommended to use a protective plate battery with a dual lithium battery flashlight) Battery parameters: Model: NCR18650B Life: 1000 times Voltage: Standard 3.6-3.7V, full 4.35V, 2.75V Internal resistance: within 90 milliohms (without protection board of 40 milliohms) Capacity: 3400mah (full capacity, not false) Dimensions: 18.2mm in diameter and 69.5mm in length (18mm without protective plate and 65mm in length) Uses: laptop battery replacement core, strong light flashlight, mobile equipment backup power supply, can also do a variety of rechargeable battery packs, widely used! Protection board parameters: Support maximum discharge current: 3A Charge upper limit protection voltage: 4.2v Lower discharge protection voltage: 2.75v Overcharge current limit: 3A Short circuit protection: recovery after charging IC: Dual MOS High Performance IC Control Bottom plate: stainless steel bottom plate, passed the 1000 times wear test of the Ministry of Public Security, which is longer than the general protection plate and more durable. Installation process: Transparent sleeve is used to facilitate buyers to identify the authenticity of the product It is welded by professional spot welding machine, the internal resistance is small, and the nickel belt protection plate is welded more firmly and is not easy to fall off.

---