Deep cycle agm battery replacement?

[Area 51]

Well done thread.
Thx everyone.
Ordering the Optima DH6 now.
Peak them up once in a while they work great in all my vehicles and tractors.
Well done.

 

[AlexGates]

I would think the Magnuson-Moss Warranty Act would prevent Toyota from blaming the battery. MMWA is the reason we can safely choose to use after market parts on our cars, but still expect the warranty to be honored. A manufacturer can't just point to an after market part and refuse to cover the warranty.

I'm aware of that, do you have to time or desire to fight that out in court? I don't. But, the Antigravity does look like a fantastic option for the LC w/ the issue some members are having. I'll probably end up putting on in if I ever have the issues some members are having, but that is an expensive battery lol.

 

[uraniumrich]

I'm aware of that, do you have to time or desire to fight that out in court? I don't. But, the Antigravity does look like a fantastic option for the LC w/ the issue some members are having. I'll probably end up putting on in if I ever have the issues some members are having, but that is an expensive battery lol.

I did some additional reading on the AntiGravity last night. What I found was some people were having issues with the BMS (battery management system). If the BMS fails, then the battery is junk even though the cells are still good. The warranty isn't great - 3 years with a maximum of 1 replaced battery. In addition, it sounds like you are responsible for paying to ship the battery to AntiGravity to obtain warranty replacement. If it fails again within the warranty period, you have a brick. The BMS may cause voltage spikes which could potentially damage the ECU or other electronic components. Some people also complained that getting warranty service through AntiGravity was difficult with AntiGravity denying warranty claims. Of course, I take everything with a grain of salt, this being the internet. You could get the AntiGravity and experience no issues. Or, you could get it, the BMS could destroy your ECU, and you would need both a new battery and a new ECU which Toyota may not replace under warranty. AGM batteries have some advantages over flooded lead-acid batteries, notably their resistance to vibrations, that might make an AGM a better choice than a traditional lead-acid battery.

 

[uraniumrich]

Following up...here's some links to some reviews of AntiGravity batteries.

Review #1
Review #2
Review #3
Review #4
Review #5 (positive review)
Review #6 (tl;dr, the most comprehensive review)

You can certainly find positive reviews in addition to the negative ones. People tend to post more often when they run into issues.

I'm also wondering if another manufacturer of LiPO4 or LiFePO4 car batteries might be cheaper and more reliable. Hard to tell based on my research so far.