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South Korea, Seoul
1 Level
717 Review
50 Karma

Review on πŸ”Œ MOTOPOWER MP00205A 12V 800mA Automatic Battery Charger Maintainer Trickle Charger Desulfator by Travis Smith

Revainrating 5 out of 5

Live up to expectations, maybe do a little DIY modding and it's a great buy

Here's my story: After driving my car for a few months during the COVID-19 quarantine, my 2018 , hardly drove once a week Honda Accord would not start. I tried starting with my wife's 2002 Honda Civic - it still doesn't work. Impressive! I have a decent quality multimeter that I have - less than 8 volts from a 12v battery. Double cheers! I checked the electrolyte - wow, one of the six cans had plates exposed. Well that explains the very low volts pretty well. Filled up to the limit, then tried again to start from an external source. Yes, three cheers. Well I had plenty of time on my hands to be on vacation so I ordered this little device. Inexpensive, but he has made promises about what he can do and what it costs. Reviews are good. Some horror though. A risk taken. With 800mA it will not be able to quickly charge a 500Ah car battery. I plugged it in and monitored the voltage for a few days. The weather was quite warm, between 80 and 90 degrees Fahrenheit, and I noticed that this little device got hot as hell - too hot, in fact. Separated it and removed the back panel. The board feels very hot, the capacitor and the transformer feel too hot. Bad design! This thing either needs to be flooded with a non-conductive heatsink so it makes full contact with the inside of the case, or it needs ventilation holes in the case. Period. This amount of heat will fry these ingredients over time. That's right - I've pushed the unit to the limit - to charge a fairly severely drained, heavy-duty 12V battery, which _per se_ isn't its intended function. However, I have decided to do it myself. I took a drill and drilled four holes in the backplate and two holes on each side, see photo. Pretty? Not in this life. Rough but effective enough? Yes, indeed, at least he let some of that heat escape. Eventually there was enough charge to start the car, take it for a long drive, and then plug it back in to see if it completed a full cycle, which it did. another day later. It eventually hit a few stress marks to switch to absorption mode and then float mode. Also very accurate - 14.19V is still absorption mode. 14.20V - Boom, Float mode. repeatable. For twenty bucks, it did what I wanted - and more importantly, what I _expected_ - despite some reviews complaining that the battery took days to charge. It puts out fewer amps, and expecting fast charging from a slow-charging device is just plain silly. However, please make the "slit" sides real slits to allow air to flow through. I realize this will increase production costs a bit, but people will live longer on their (admittedly small) investment - and maybe fewer people will die in the field, leading to bad reviews. As for me, I'm very happy with it - because it met my expectations.

Pros
  • Easy to Use
Cons
  • Quick Start Guide