UPG Universal Power Group 12 Volt 22 Ah AGM Sealed Maintenance Free 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 installed these higher ah rated batteries into my 13-year old CMM 1000 B&D (Black & Decker) battery lawnmower and it roared back to life! Works great! Can mow the entire yard, the township strip behind me, AND my neighbor's curb grass in one sitting now. No problems with charging and they fit perfectly! My siblings kept screeching for me to get a new mower, but decided to try this less costly option of battery replacement with higher ah first since there were no motor issues in my old mower. Glad I opted for the new batteries! In the future, if I order something this small but heavy I will will separate the two items into two different orders to reduce box weight. Apparently the heavy box must have slipped from one of the carrier's hands during shipping and dented the corner of one battery but did not crack the case.

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 !

Purchased this to replace my 5 or 6 year old Schumacher Power Brick (Jump starter, power source, air pump) as that battery died (after some good reliable use) around February/March last year. Bought a different brand replacement last May. Was looking at this old 'brick' to pull the battery for recycling and disposal, and saw the access panel. Battery slid out, so I said 'what the heck' and researched a replacement JIC. Wow, Amazon had a 22 AH replacement for this 18 AH original. Ordered here, and came in drop shipped with no hassle. Installed into the old power brick, powered it up and voila, 100% charge already. Tried all functions but a battery start, and all is working perfectly, so I can now station this brick in my wife's car for emergencies. Thank You Universal Power Group!!

The battery itself is fine--if you can figure out how to get the old battery out and the new one in. I'm not a complete all-thumbs person when it comes to working with this kind of thing (I owned my own photo studio for 40 years and dealt with many different kinds of electronic equipment), but this was a challenge. There is one video on YouTube that a guy trying to be helpful put up, but I think the company itself should put up a how-to video. At the very least, they should include a set of instructions with a few good pictures. If you order one of these, make sure you are knowledgeable about this sort of thing, or have a good friend who can help.

I ordered this for a Diehard 1150 portable power jumpstart pack and it was a perfect replacement. When I finished installing the battery, the power pack worked perfectly and three battery indicator showed 100 percent. I haven't jump started anything yet, but I did thanks the power pack with me on a camping trip and inflated 5 or 6 appt mattresses. They battery now shows a charger of about 90 percent which I don't think is that or of the ordinary. For now, it's getting 5 starts for being a direct replacement without any need to modify it fiddle with it to get it to work. I will update with longevity or any other issues after I have it for a while.

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-watt 12v 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, 2016 The battery had an intial voltage of 12.94v with no load applied and it remained at 12.94v 12 hours later. December 8, 2016 I 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, 2016 I ran the DSL router for 4.5 hours and the battery voltage dropped to 12.54v. December 10, 2016 I ran the DSL router for 1 hour and the battery voltage dropped to 12.49v. December 11, 2016 I ran the DSL router for 1 hour and the battery voltage dropped to 12.26v. December 12, 2016 I 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, 2016 I ran the DSL router for most of the day and the voltage dropped to 11.41v. December 14, 2016 The 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.