# Ezip 400 upgrade to Lithium Lifepo4 **URL:** \ **Category:** Scooters, Bikes, Sagways\ **Created:** [February 10, 2023, 9:15pm UTC](https://community.electricforum.com/t/ezip-400-upgrade-to-lithium-lifepo4/25852 "2023-02-10T21:15:03Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![ilov2xlr8](https://avatars.discourse-cdn.com/v4/letter/i/97f17d/32.png) [@ilov2xlr8](https://community.electricforum.com/u/ilov2xlr8)\ **Post date:** [February 10, 2023, 9:15pm UTC](https://community.electricforum.com/t/ezip-400-upgrade-to-lithium-lifepo4/25852/1 "2023-02-10T21:15:03Z")
So I thought I’d upgrade the ezip 400 scooter from lead to lithium batteries. Original were two 12V SLA batteries. I got two LiFePo4 that have same Ah rating but the scooter cuts off after few seconds as load increases. Do these lifepo batteries have some kind of internal shutoff circuit and cuts off power when current draw is too much? But they’re rated the same as the SLAs. I’m new to lifepos so have no clue, any help will be appreciated. ![Screenshot_20230210_160711_Amazon Business](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/9/98408c5a480337d594ca61397a1531abbf8f4b3b.jpeg) ![Screenshot_20230210_161035_Amazon Business](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/1/115d05b63f077cf979deea1679364a29ff54807b.jpeg) ---
**Author:** ![JarJarJava](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jarjarjava/32/15158_2.png) [@JarJarJava](https://community.electricforum.com/u/JarJarJava)\ **Post date:** [February 10, 2023, 9:37pm UTC](https://community.electricforum.com/t/ezip-400-upgrade-to-lithium-lifepo4/25852/2 "2023-02-10T21:37:20Z")
![Paris_Tuileries_Garden_Facepalm_statue](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/1/1677b94272c80d7f1bd02f3269b443288d9a8390.jpeg) ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [February 10, 2023, 9:37pm UTC](https://community.electricforum.com/t/ezip-400-upgrade-to-lithium-lifepo4/25852/3 "2023-02-10T21:37:49Z")
> [@ilov2xlr8](#): > > Do these lifepo batteries have some kind of internal shutoff circuit and cuts off power when current draw is too much? > [@ilov2xlr8](#): > > But they’re rated the same as the SLAs Yes, they do. Do you have the rating info? ---
**Author:** ![ilov2xlr8](https://avatars.discourse-cdn.com/v4/letter/i/97f17d/32.png) [@ilov2xlr8](https://community.electricforum.com/u/ilov2xlr8)\ **Post date:** [February 10, 2023, 9:47pm UTC](https://community.electricforum.com/t/ezip-400-upgrade-to-lithium-lifepo4/25852/4 "2023-02-10T21:47:46Z")
What specifically? There is some information the picture of the battery on the battery. Here’s a link to the lifepos sale page: > **[Amazon.com: 12V 10Ah Lithium Iron Battery LiFePO4 Deep Cycle Batteries, Built-in...](https://www.amazon.com/Lithium-Battery-LiFePO4-Batteries-Built/dp/B09HGQBMM3)** > > Buy 12V 10Ah Lithium Iron Battery LiFePO4 Deep Cycle Batteries, Built-in BMS, 2000+ Cycles…: Batteries - Amazon.com ✓ FREE DELIVERY possible on eligible purchases ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [February 10, 2023, 10:09pm UTC](https://community.electricforum.com/t/ezip-400-upgrade-to-lithium-lifepo4/25852/5 "2023-02-10T22:09:55Z")
It doesn’t list peak discharge that I can see, but current is listed as 8-10amps. Not much current to work with. LiFePo4 are generally low output unless specifically for use in EV. So I would say, they are not rated same as SLA battery. ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [February 10, 2023, 10:29pm UTC](https://community.electricforum.com/t/ezip-400-upgrade-to-lithium-lifepo4/25852/6 "2023-02-10T22:29:11Z")
Not much information out there. Found this, but I know a 10ah sla can do much more: ![image](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/2/216ea9291d9034e602e8e93cbcaaf365443a77e9.png) ---
**Author:** ![ilov2xlr8](https://avatars.discourse-cdn.com/v4/letter/i/97f17d/32.png) [@ilov2xlr8](https://community.electricforum.com/u/ilov2xlr8)\ **Post date:** [February 10, 2023, 10:41pm UTC](https://community.electricforum.com/t/ezip-400-upgrade-to-lithium-lifepo4/25852/7 "2023-02-10T22:41:48Z")
Yeah I figured the lifepos couldn’t match the discharge rate of the SLAs. Thanks for your help! ---
**Author:** ![tonni6030](https://avatars.discourse-cdn.com/v4/letter/t/b19c9b/32.png) [@tonni6030](https://community.electricforum.com/u/tonni6030)\ **Post date:** [August 19, 2025, 12:14pm UTC](https://community.electricforum.com/t/ezip-400-upgrade-to-lithium-lifepo4/25852/8 "2025-08-19T12:14:36Z")
"The LiFePO4 batteries you’re using most likely have a built-in BMS (battery management system) that shuts down when the current draw is higher than the pack allows. Even though the Ah rating matches the old SLA batteries, the way LiFePO4 works is different, and the BMS limits the peak current to protect the cells. The scooter motor pulls a surge of amps when starting, which can be more than the BMS limit, so the pack cuts out after a few seconds. Lead-acid batteries can handle short surges better even with the same Ah rating. For your scooter, you’ll need LiFePO4 packs with higher continuous and peak discharge ratings, or ones made specifically for scooters and e-bikes.