I've read the complete thread and have seen that you've now decided to leave the battery, and then do this yourself in time, but as mentioned by others the price quoted by the dealer does seem high, although I appreciate it can change for different areas of the country. I've checked a few dealers around me, and the price for the battery change ranged from £138 to £152.According to the dealer:
“Service say your next service will be about £352, this includes the service (£75), brake fluid change (£59) and a 12v battery change (£228).“
My car is a 65 reg and came with 4 years free servicing / warranty. Does this mean the battery will not be free? How about if the battery fails before the 3 years, can i then claim under warranty? I went on holiday for 2 weeks and the zoe was very upset when i got back, had to drive it at restricted speed (20mph) for a bit and then restart the car to get the battery back to the right level.
It's not really that the 12V battery fails suddenly. The battery performance degrades slowly over use and time, and the car's systems work harder and harder to compensate for the degradation, till it suddenly can't cope any longer. Then the whole system fails suddenly.
Am I being a bit picky?
Try designing a 400v indicator light circuit, to a safe standard, within the confines of a vehicle. Once you have done that, you will understand why 12v is used. Hint, look under your bonnet and try tracing the HV orange wires.still dont get on why pure EV's still carry a 12v acid battery when they have 40+ kWh high voltage worth of battery on board...
Yeah most cars accessories are designed for 12v (light bulbs, stereos, speakers,etc), but why not just use a new high voltage standard and power everything from the main battery?