Review on 🔋 ESYB E4 Intelligent Battery Charger 4 Bay: LCD Display, Universal Fast Charging for all Ni-MH/Ni-Cd and Li-ion Batteries by Mike Mahfood

I bought the E4 mainly because of lithium ion batteries. It charges them well and works! Bluetooth is a little useless due to the range, but it always charges my batteries between 4.20V and 4.22V. I have a small note: it seems that the battery voltage is not being displayed correctly, but it is still charging correctly. For example if I put the cell down to about 3.70v it will read it right first and then go up to 3.84v or 3.90v and THEN start charging. Really strange, but never charged the battery, not once!