return to homepage

EV Battery Cycle Life

by Anonymous

What does the term "cycle life" mean when you're talking about electric car or golf cart batteries?

Hi, good question.

It's the number of times a battery can be discharged and recharged until it will no longer take a charge. A battery like the Trojan T-105 is reputed to have 750 full charge/discharge cycles in its life.

Does this REALLY mean discharging all the way? No. Lead acid batteries don't like to be fully discharged, and they will respond with a nasty drop in cycle life.

Does this mean every time you charge the battery, even if it's only been run slightly, that it counts as a cycle? No. There's an equation for this that escapes me at the moment, but there's no "topping off" penalty, contrary to popular belief. Lead-acid batteries prefer to be topped off, not run down fully before recharging.

Does this mean every golf cart battery has about 750 cycles, more or less? No. And not every T-105 will perform that well, either. There are plenty of things that affect cycle life that make it really hard to predict just how many cycles you're going to get out of your battery pack.

Thanks for writing in!


Click here to post comments

Return to Battery Q&A.

New Book!

Let's Talk About Electric Cars book

From Electric Cars are for Girls

Conversion Help

EV Conversion Videos

EV Conversion Videos

Electric car Conversion books

EV Conversion Books

CanEV Conversion Kit

EV Conversion Kits

Conversion Info

Electric Car Conversion

Conversion Central

electric car conversion

Build Your Own

Electric Car Motor

Electric Car Motors

Electric Car Batteries

Electric Car Batteries

[?] Subscribe To This Site

follow us in feedly
Add to My Yahoo!

Charge On! Newsletter

Once a month (or less), I'll send out a newsletter called Charge ON! with the latest interesting electric car stuff.

To get on the list, fill in your name and email address below, and I'll send you a note to make sure it wasn't the DOG that subscribed you by accident; )




Don't worry -- your e-mail address is totally secure.
I promise to use it only to send you Charge On!.
Enjoy This Site?
Then why not use the button below, to add us to your favorite bookmarking service?

| Electric Cars are for Girls Homepage | Privacy |Contact |About Me

Copyright 2006-2014 All Rights Reserved.