I have an older u1 battery for my riding mower. Its been sitting for a while and was reading 11.6v which is dead dead but should mean that the plates are still viable. I put it on the trickle charger for a few days and it reached full capacity. I took the charger off and let it sit for a few days to get an accurate reading. Now the battery reads 6.5v. Why would the battery go bad after being charged up?
Lawn mower batttery got worse from charging
- Thread starter joegreen
- Start date
It's old
Did it get noticeably colder over the time frame?
How powerful a charger?
When I put the riding lawn mower on a Battery Tender Jr it only takes an hour or so to get the light to go green.
Having written that, consider changing the oil to something like 5W-30 synthetic, getting a mulching attachment (for the purposes of mulching leaves), and using the mower a greater % of the year.
Having bought a ton of them over the years, I have drawn one conclusion.
Regardless of how much one pays for them, they are basically junk.
This is evident, based on the fact that they only have a 6 month warranty.
Just view them as a consumable, and shop for the cheapest you can get (generally Walmart, Rural King, or a farm store.)
If you can get 4 years out of one (my best is 6, my worst is 1 year,) it is a good run.
Regardless of how much one pays for them, they are basically junk.
This is evident, based on the fact that they only have a 6 month warranty.
Just view them as a consumable, and shop for the cheapest you can get (generally Walmart, Rural King, or a farm store.)
If you can get 4 years out of one (my best is 6, my worst is 1 year,) it is a good run.
This.. I leave mine on one of the $5.99 HF float chargers 24/7 and that seems to get me at least 3 years.
Heat from charging killing an already old damaged cell(s).
Id say the market is 95% junk.
The thin plate pure lead batteries (TPPL) design (of which there are very few vendors) have been superb and Ive got a 14 year old one in my truck.
When you have to own and maintain 20 batts yourself and in the course of run a shop see hundreds of batteries in a variety of vehicles only a few stand out.
They are garbage - expect a lifespan of 2 years, maybe 3. Anything beyond that, good luck.
I can pick my mower battery up with one hand.
Tells you something.
Tells you something.
I also suspect that the warranty is short because off season they aren't used and self destruct due to lack of battery maintainer use.
I wonder how an AGM battery might compare.
I charged it in my house so temp was the same
Go bad after charging? It was shot before you charged it.
I learned here a long time that it's because the battery lives in much harsher environment in a mower with way more vibration than in a car.
11.6 volts is 100% discharged. Sitting this way for a prolonged period of time will cause irreversible damage. The goose was cooked before you put the charger on it.
I avoid buying U1.
my ariens came with an oem agm. Made it 6-7 years.
i tried an AGM Motorsport AGM from Walmart for $60. It lasted 3.
turns out Ariens will indeed sell you their AGMs for $60 or so. Bought one of those again. IDK who makes them but they seem to be robust and made towards OPE environments.
my ariens came with an oem agm. Made it 6-7 years.
i tried an AGM Motorsport AGM from Walmart for $60. It lasted 3.
turns out Ariens will indeed sell you their AGMs for $60 or so. Bought one of those again. IDK who makes them but they seem to be robust and made towards OPE environments.
I'm got 5 years on the Costco Interstate U1 battery in my rider and it just started getting tired this fall. I just take it out over the winter and put one of those little Harbor Freight maintainers on it after giving it a full charge.
Similar threads
