Real reviews - MX4 charger for charging Ni-MH and Li-ion batteries
This new compact MX4 Charger has wide compatibility for 3.6/3.7V & 1.5V Li-ion, 3.2V LiFePO4 & 1.2V Ni-MH batteries. It’s very suitable for users who need to charge different types of batteries at once.
How do you think of it?
See what they say: https://budgetlightforum.com/t/new-product-xtar-mx4-charger-is-coming-soon/222144
1. The XTAR 1.5V Li-ion 4150mWh 2500mAh cell (14500 1.5V li-ion) charged at a rate of 0.4A until it reached 5V.
The cell produces 1.515V when full and about 1.10V when it needs to be recharged.
2. Here are some graphs of the XTAR MX4 charging a few Ni-MH cells.
-- LADDA 2450mAh Ni-MH
The MX4 starts with a 200mA pulse current and continues to charge with a 500mA pulse current. After 5 hours 40 minutes, it appears to have 0dV or -dV detection to switch to a stage where it spends another 2 hours topping the cell off.
I’ll see if I can plot the average current. The top off current looks a bit high at first glance but the average could be 50mA instead of 500mA.
-- eneloop pro AA 2450mAh Ni-MH
Bluetooth connectivity to one of my digital multimeters dropped out for a few minutes around 7 hours 40 minutes so there’s a small gap with the voltage measurements.
The eneloop pro AA cell is a bit older compared to the LADDA cell that I tested. The charging profile looks very similar.
The algorithm that the XTAR MX4 uses for charging Ni-MH cells looks very similar to the XTAR VP4 Plus Dragon.