MakerHawk Raspberry Pi UPS Power Supply Uninterruptible HAT with Battery Charger Power Bank & Management Expansion Board 5V for Raspberry Pi 4 Model B / 3B + / 3B (Battery Excluded) Review

I know it's not a fast charger, but these chips charge decently fast. I made my own backup power supply using a few items I bought a long time ago. The chip does not heat up during charging, which indicates excellent build quality. It's also very energy efficient. I charged Xiaomi Mi Max 3 and Samsung Galaxy S8 and still had power left. I am very happy with my purchase.

I used this in Central Africa to make my own cheap solar charger there. worked great. First I put them all in a 20 watt panel, then scratched my head when that didn't work, the arithmetic is watts divided by volts equals amps. So yes, I should have done it first. They work well when connecting a dual USB charger to a 20W panel. You could do with less, but don't expect to overcharge, I can only assume the math works like this: 20 watts / 5 volts = 4 amps. but in reality the panel outputs 14 or…

I've used a few of them now in various projects and portable power packs and they work great and charge very quickly. Keep in mind that if you don't use a heavy-duty charging cable, it may not charge very quickly, or if you don't supply enough power to the module. In my experience they work fine at 12 volts, but they work even better at 20 or 24 volts if you have a good 5 amp RMS power supply behind them. But you have to try the different cables you have and stick a boost probe into the input…

This UPS power supply for Raspberry Pi works great. This way you can run your Pi with a pair of 18650s and charge [healthy] batteries without them exploding. It's usually easy to install. The hardest part of the installation is attaching the nuts to the metal studs on top of the Pi. You may need electric/small wrenches, but if you're careful you can do this with your thumb and forefinger. If I had to complain about anything, I would probably complain that the power button isn't as reliable as…

Sooo good so far. Please note that I bought the USB STEP DOWN model and it works great. I only wanted one, but four for the price of one theft. They feel robust and have good contact surfaces. I was able to solder the XT60 to one pad and a fat jumper to the other. I'm pretty sure three amps will be shared when used with two devices, so 1.5 amps per USB port. So far I have tested it with different voltages of 11.1 3S (Lithium Ion), 12-14V (Lead Acid), 18V drill batteries and it has worked with…