Can it run a fuel barrel pump, normally it uses a regular car battery, but would like to use a smaller battery if you think it would work?

I can't say but check the power pull you need. I actually replaced using a 12V computer UPS backup battery in my boat that ran gps/nav/fish finder, w/a small DieHard 12V Lawn & Garden battery #U1-1 (akin to a small 12V lead acid motorcycle battery) 160 cold/200 cranking amps w/ more beef than the computer backup battery that'll also runs a small trolling motor for a couple days b4 recharging. The computer UPS b/u battery concept is a great way to go w/o spending lots of $ for limited short-term 12V service needs, but the step-up to a real, serviceable lead-acid battery for increased capacity using only a cheapo 12V trickle charger to pump it up to 14.1V again has been my solution.

Anyone know what size crimp terminal female spade connector fits on this batter? I changed the battery in my Ion Tailgater and both spades came off.

These are the measurements right off the battery itself: Both terminals are 1/4 inch long, .190 ( about 3/16) inches wide, about .040" thick.

What is the run time of this Battery ?

The capacity of the battery is given in the part number as 5AH, which means 5 ampere hours of energy until it is drained to 75% capacity, as if you squeezed 1/4 of the water out of a fully saturated sponge. Your "runtime" depends on how fast you take that energy out of the battery or how quickly you squeeze that sponge. Devices making more movement, light, heat, or sound= more energy=quicker squeeze of the sponge, quicker drain of the battery. The 75% factor is determined by the devices that wont function correctly below that energy level. Like when the water behind a dam is just barely high enough to reach the spillway for the hydroelectric turbines means not enough energy output even though there is still a lot of water behind the dam.

Can you power a cpap while camping or during a power outage with this?

Assuming you are using a 12 volt portable CPAP - you would be far better off running it off the battery in your car. Most 12 volt CPAP's have a cigarette lighter plug to plu into your car. Portable CPAP's normally draw around 15 watts. This battery would get sluggish in only a couple hours at that rate - if that. Otherwise rent a campsite with electric. Sorry, but if you have obstructive sleep apnea maybe camping off the grid is just not a smart idea for you...

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Reviews

C**S

Excellent backup battery for alarm system

Perfect replacement for my 11-year-old alarm system battery; it solved all my issues. Simple, affordable, and works as expected.

1.12.2025

J**W

Works in APC B-UPS 425

This battery arrived quickly in perfect condition. The description didn't specifically say it would fit in my APC Back-UPS 425, but it fit perfectly, was easy to install and as you can see in the photo got a green operating light when I turned the unit on. I just installed it today, but I will report back if any problems occur.

11.01.2026

T**!

Good item

Good item for a reasonable price. Fit my alarm system requirements.

13.01.2026

L**Y

Excellent backup battery for garage door opener

My original Chamberlain backup battery expired after 9 years ( it began beeping to notify me that it needed to be replaced). I removed it to stop the beeping and debated whether to replace it. I found the Mighty Max on Amazon and decided to buy it since it was affordable and produced in the U.S. The battery arrived the next day, fully charged, and was easily installed. It was compatible and I tested it by unplugging my door opener and raising my door using battery power. It worked perfectly. I will be extremely pleased if it lasts 9 years like the original.

6.10.2025

B**A

Only lasted about 3 years and then side split open.

Used in Chamberlain garage door opener. Battery seemed to do everything it was supposed to and fit perfectly. It failed after just under 3 years. Side split open. Guess I couldn't expect more for the price.

24.10.2025

T**N

Good product

I use this battery in my garage door opener. Fits perfectly and lasts seemingly forever.

3.01.2026

J**M

Good choice for a Craftsman Garage Door Opener

The battery on my garage door opener failed. So I replaced it with this one and it fit into the door opener and it works perfectly fine.

30.12.2025

B**S

Works out of box

Perfect fir and works out of box! Happy Grandchildren

29.12.2025

م**ف

بطارية ممتازة تعمل جيدا

4.06.2025

A**O

Funciona perfecto y siempre es satisfactorio cuando ves la calidad de lo que estás comprando desde el empacado.

29.10.2025

M**K

Installed it today no issues. Worked as a perfect replacement for my craftsman 1/2hp belt drive garage opener. Hoping it lasts as long as the original.

24.12.2025

C**C

Arrivée comme prévue et fonctionne bien avec mon moteur de porte de garage LiftMaster.

31.12.2025

A**R

buen producto.

27.11.2025

ASIN	B079ZCJYP3
Batteries	1 12V batteries required. (included)
Best Sellers Rank	#6,647 in Health & Household ( See Top 100 in Health & Household ) #4 in 12V Batteries
Customer Reviews	4.6 4.6 out of 5 stars (9,880)
Date First Available	February 19, 2018
Item Weight	3 pounds
Item model number	41A0163
Manufacturer	Mighty Max Battery
Product Dimensions	3.54 x 2.76 x 4.21 inches

Mighty Max Battery ML5-12 - 12 Volt 5 AH, F1 Terminal, Rechargeable SLA AGM Battery

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