[Shop-talk] AGM battery: OK to lay it on its side?

[David Scheidt]

> On May 11, 2026, at 02:21, Philip Ethier <pethier7 at gmail.com> wrote:
> 
> 
> I could swear that I used to run an AGM battery meant for a Honda Gold Wing, laid down flat in my Lotus Elise. That car has gone away.
> 
> I bought a Birkin and there is a larger automotive AGM battery lying on its side.  This battery won't fit in there standing up with the terminals on top.  Is it OK to continue to use the mounting done by a previous owner?
> 

Yes.  Agm batteries can be mounted in any orientation.  Most say not upside down, but I am pretty sure that is to avoid dropping it and shorting the terminals. 

>