UPG Universal Power Group 12 Volt 22 Ah AGM Sealed Maintenance Free Battery

This 12-volt battery was put to a drawdown test immediately after it was received on DEC 7, 2016. It was connected to a 300-watt12v to 110v inverter which powered a variety of 110v AC devices. The daily test, chronicled below, continued until the battery voltage fell to 10.53v,after which the inverter shut itself down.December 7, 2016The battery had an intial voltage of 12.94v with no load applied and it remained at 12.94v 12 hours later.December 8, 2016I first connected a small DSL router and 110v 0.2A fan for 24 minutes which dropped the battery voltage to 12.79v. I then ran the router alone for 40 minutes which dropped the battery voltage to 12.81v. By the end of DEC 8, 2016 I had used the battery to recharge one of my laptop computers and ran the router for up to 3 hours before the batter voltage dropped to 12.67v.December 9, 2016I ran the DSL router for 4.5 hours and the battery voltage dropped to 12.54v.December 10, 2016I ran the DSL router for 1 hour and the battery voltage dropped to 12.49v.December 11, 2016I ran the DSL router for 1 hour and the battery voltage dropped to 12.26v.December 12, 2016I ran the DSL router for 1 hour while also recharging my laptop computer from 5% to 73% and the battery voltage dropped to 11.76v.December 13, 2016I ran the DSL router for most of the day and the voltage dropped to 11.41v.December 14, 2016The inverter warning light came on after the battery voltage dropped to 11.02v. This normal with 12v AGM batteries.This 12v 22Ah battery performed flawlessly while subject to normal usage and no recharge for 7 days. Upon being fully recharged it quickly returned to a 13v maximum. I highly recommend this 12v 22Ah battery.

I bought this to replace the battery in a DeWalt jump starter that finally died after six years and an awful lot of use with both jumps and the air pump. This fit perfectly, terminals are strong and good quality, and thus far the capacity and voltage stability seem excellent. I looked at a lot of brands of these and while some were a little cheaper, I ended up going with UPG because they're a solid longtime business with good support if you need it, so even if they're the same batteries it may be worth a few extra bucks for that. If the ratings and graphs are to be trusted, this one also has just a bit more in there, but not as good as the BB brand which Clore and others use as OEM stock, but the BB batteries are hard to find and quite a bit more expensive, and they'll die just like these eventually.

I purchased years ago a Stanley FatMax device that will air up your car tires, jump start a dead battery, give you 2 110vac outlets.Over time the original battery just wouldn't keep or hold a charge. This battery is the direct replacement for the original on. It now gives the FatMax new life for many years.

I've been using this as a camping CPAP battery and as a backup if the power goes out. For that purpose, I am more than happy with the performance of this battery. I charge it using a Battery Tender brand 1A charger. It takes a day or so to charge up, but once full, it holds 13.5V for over a month without use. I am able to easily get 3 nights of sleep using my CPAP (no humidifier or heated tube). I am lucky my CPAP needs a 12V supply so no inverter loss. I have never tried more than 3 nights, but the battery still had 13V after 3 nights. Overall, no complaints. It does exactly what I expected a 22Ah battery to do. Including the DC power cord for my CPAP (Philips Respironics Series 50), I spent less than $65 for a battery solution. Much better than the $300+ that medical companies want for one.

Appears to be a nice Lead Gel battery for a reasonable price. (Time will tell - there are a lot of Asian Battery Companies, some make great batteries, some are "new to the business" and have products with very short lives). Note: MightyMax Batteries seem to be covered by a Ome Year warranty.....Different Manufactures have their own way of supporting warranty claims !

Bought 4 batteries to put in 2 power chairs. First order never arrived due to damaged during shipment. Had to wait a long time and call Amazon several times to get refunded then reorder. Put them in the power chairs and 2 of them were very bad. Had to recharge them every 3 hours during our vacation the other 2 lasted all day.

I purchased 2 of these for my mobility scooter, I'm happy to report that not only are they a perfect fit to replace the old ones, but they also increased the range of the scooter by a few miles.I've only had them for about a week but so far they've been great, let's hope they'll last as long as the ones they're replacing (or longer).If you're looking for replacements for your mobility scooter and it takes 12v 18-20AH SLA batteries, chances are pretty good these will fit and they work great.

I ordered two of these because my scooter uses two. i didn't know each one was two batteries. i ended up with four instead of two and since they were not returnable i now have two extra nonreturnable batteries. the two I installed were just what I needed,