I love this charger. I use it as a backup battery for a 200W 300Ah solar gel battery (4 x 75Ah batteries) and it works great. Easy to set up, easy to read and looks great with all the other gadgets I have connected. Keep my fridge plugged into the solar panel all the time and sometimes my (500 watt) entertainment system. I use this charger at night when my batteries drop below 12.3V. It charges fast and works under load so I don't have to unplug anything. I'm hooked up to 2 medium batteries when charging as I'm not sure the cables will reach each end of the bank and if I add 2 more batteries in April I'm pretty sure they won't but balancing the batteries doesn't seem to be a problem. My multimeter reads the same voltage on all four devices after I unplugged the charger. I've only used it in 20A mode as it charges quickly and I'm just waiting for my solar charge controller to turn on when the sun comes up. For those interested in fixing their solar battery problems, or even a car, motorcycle, or lawnmower battery, charging this charger will be a challenge. It's also lightweight and very portable.
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