product description
MH-18a Quick Charger Brand new licensed
Contains charger and power cord.
This charger is designed for Nikon EN-EL3, EN-EL3a and EN-EL3e rechargeable lithium-ion (Lithium-ion) batteries for fast charging.
Applicable models: D100, D70, D70S, D50, D80, D90, D200, D300, D300s, D700
Lithium batteries are more delicate, Nikon original charger MH-18a has very strict protection measures(Temperature, overvoltage, overcharge, undervoltage), Contains special IC for intelligent charging processing system, different charging currents in different charging stages, full detection has -△V monitoring stop charging, negative voltage difference (?dV)/zero voltage difference (0dV), etc., which can better protect the battery , Extend battery life;
99% of non-original chargers are fully charged with only one voltage detection, including some domestic chargers, the detection accuracy is not high, because the contact resistance of the contact is uncertain, the voltage detection will have a large error, a single voltage detection is difficult to judge correctly Whether the battery is fully charged, so if you use a non-original charger, it is easy to overcharge or undercharge, and long-term use will have a great impact on the life of the battery.