I'm wondering if your insurance company will require storing it outside, so when it inevitably has a catastrophic electrical fire it doesn't burn up the rest of your equipment.
That's likely more of a product of the mfg and not being electric.
Paper mills in my area have HUNDREDS of electric lift trucks, mobility carts and SVGs and if they had a propensity to burst into flames due to being electric - they wouldn't be there.
In all fairness, those are probably lead-acid, not Li-ion. Li-ion fires are not unheard of, but they aren't an every day occurrence, either. The Chevy Bolt comes to mind. About a dozen out of 30,000 lit off, and that's the highest rate I know of.
