Chevy Bolt EV Forum banner
  • Hey Guest, welcome to ChevyBolt.org. We encourage you to register to engage in conversations about your Bolt.
1 - 7 of 7 Posts

Registered
2022 Bolt EUV Nov build
Joined
9,565 Posts
Discussion Starter · #1 ·

Registered
Joined
72 Posts
Battery temperature and rate of charge/discharge are also important factors. Avoiding high temperatures for extended periods of time and going easy on the accelerator will also help the battery last longer.
 

Registered
2022 Bolt EUV Nov build
Joined
9,565 Posts
Discussion Starter · #3 ·
Yep, looks like 4 key items to look at:

  1. High temperatures.
  2. Overcharging or high voltage.
  3. Deep discharges or low voltage.
  4. High discharges or charge current.

 

Registered
Joined
72 Posts
It's safe to assume that slightly more effort was spent on the design of the Bolt than an appliance, but you're absolutely right that normal operation won't harm the battery. However, there are things you can do to minimize battery degradation. GM engineers have done a good job of incorporating safety margins into the battery pack design and conditioning system to make it last at least the duration of the factory warranty. They can't control how many times the battery is cycled, the depth of discharge, rate of discharge, and rate of charge which all factor into battery life.
 

Registered
Joined
8,884 Posts
GM does control depth of charge/discharge, and rate of charge/discharge. Full is not actually 100% of the batteries capacity to accept a charge, and empty is not flat dead. It won't output more than about 200 HP (or whatever the power limit is), or charge at faster than ~55 kW with a taper. Not only all that, but the temperature is kept within certain limits.

Everything is a balance, and GM has built the car to what they think is the best compromise of all things considered. If people are concerned that it isn't enough, they can modify their behavior in the quest to preserve the health of the battery. In my estimation, GM wouldn't have given the ability to select the maximum charge percent if it had no positive benefits.
 

Registered
Joined
72 Posts
GM does control depth of charge/discharge, and rate of charge/discharge.
They only limit the maximum values, which appear to be conservative. Driving the car hard and fast charging every day will have a negative effect on battery life, but you could do it and that could be considered normal to some people.

If people are concerned that it isn't enough, they can modify their behavior in the quest to preserve the health of the battery.
Yep, that's the bottom line.
 
1 - 7 of 7 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top