Recent content by Atvguy

Yep. It mainly says the BMS shuts off lights and USB ports after a preset time, which is independent of the battery condition, although it may turn them off sooner if the system detects low battery voltage. If the engine is running and it detects low voltage it will limit occupant's ability to...

Who's arguing? What is being argued?

Can an external BMS have much control over the battery itself as compared to a BMS integrated into the battery? After watching the video from your link I got the impression that it monitors the battery while managing accessories and charging. Whereas the BMS in the battery actively prevents...

Here I highlighted it. I thought you were surprised your mowers had bigger batteries than the 280cc quad I posted above your post. It made sense to me because I was surprised when I learned mowers had such big engines, especially a 42 inch plain ole lawn tractor.

I don't know... you said your mowers had bigger batteries than the battery "above" which I understood to mean the batteries I posted for the 280cc King Quad. I said that's because your mowers have bigger engines than the 280cc quad. You said "Not any of mine maybe an old riding lawn mower"...

The gravely is 603cc https://www.gravely.com/en-us/power-equipment/zero-turn-mowers/compact-pro/compact-pro,-34-gravely-kaw The ferris is 726cc https://www.ferrismowers.com/na/en_us/product-catalog/stand-on-mowers/soft-ride-standon-srs-z2-mowers.html Those engines are much larger than the...

Yes I've been seeing a trend of AGMs of less capacity being recommended as a replacement for flooded. I just pointed that out in another thread about ATVs. Here is a case where Yuasa recommends an AGM and a conventional, but the AGM is 12ah while the conventional is 14ah. Odyssey is the...

No, I asked what mowers you have. Mine is a lawn tractor, 750cc twin Briggs making 22 hp and 42 inch cut. It came with a regular U1 flooded battery that's probably 250 CCA. An atv battery will not crank it. I have to manually turn the top of the mower to get past the compression so the...

What mowers do you have?

The flooded battery in my truck has a 11/16 sticker on it and I still consider it kinda new. But even if AGM lasted longer, how much longer would it need to last to justify the 45% extra cost? (AGM is 45% more expensive and flooded is 31% cheaper.) An AGM would need to last 15 years to equal...

Interesting. Now we've two identical acronyms with somewhat different meanings. Battery Monitoring System evidently monitors the battery from the vehicle. Battery Management System manages the battery from inside the battery.

The flooded has 13% more CCA, 25% more reserve capacity, and is 31% cheaper. Why is this even a question?

BMS (battery management system) is for lithium batteries and it's in the battery, not the vehicle. AGMs have lower resistance and will draw more current from a charging system unless the voltage is set lower in the regulator. That higher current could damage either the battery or the charging...

Lawn mowers tend to have a lot of cc's so they need bigger batteries to crank it. I think my small lawn tractor is 750cc.

Many ATVs come with AGMs from the factory so it depends on what machine you have. Even though Yuasa issued the warning they still offer an AGM and a conventional for a 300 King Quad that came with conventional, so it may depend on how the battery is made. The conventional is 14ah and the AGM...