Unless you are past warranty when you become a DIY sucker/loser, to use today's phraseology.
I would not use an AGM battery unless there is a need to be spill-proof. They are not as durable, particularity against overcharging and the cells can't be equalized which can lead to premature failure of some cells - which you definitely don't want to happen on the ED as this can trigger a traction pack bricking.Has anyone actually tried the ACDelco LN1AGM battery? Looks to be exact size, vents on both ends with a plug for the unused port.
i have a lot of (bad) experience with AGM batteries in a traction application (an early electric motor scooter) and they certainly are not at all good for deep cycle applications, becasue of the inability to balance-equalization charge them by periodically deliberately overcharging them. Overcharging cannot be done on AGM cells since they have no excess electrolyte to lose and no ability to replace lost electrolite. One or two cells inevitably become out of balance and the rest of the cells see repeated overcharging and the battery is ruined.I would have no qualms using an AGM battery personally. But I have not tried one in the smart.
Some digging has revealed potential size matches:
L1 ? (? because I only saw one source mention it batterysource.com)
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