We've (me and my son) have four work trucks. We've replaced the chainsaws air compressors, sprayers, drills, impact, bandsaws, grinders and weed eater s all with battery power.
When it comes to a vehicle your cost percent on battery is a little exaggerated.
And you should credit things the electric doesn't consume or need. Coolant,oil gas, their associated tanks pumps, and lines. No multispeed transmission. The list goes on. Yes they have improvement to make but make no mistake they will make these improvements. Oh and those batteries already have 8 year warranty. I'm not trying to save the world or stir the pot. Just looking at things honestly.