Best way to charge LiFePO4 pack?

6 posts / 0 new
Last post
hopbot
hopbot's picture
Offline
Last seen: 12 years 11 months ago
Joined: Sunday, June 24, 2007 - 18:35
Points: 25
Best way to charge LiFePO4 pack?

hey there all. i searched for this and tried to gleen it from battery university, but i think a lot of it is over my head. i have a 17Ah 24V LiFePO4 pack and i'm not sure if i need to discharge it completely before charging or charge after every use. do i need to pull them off the charger when they reach 100%?

any help would be greatly appreciated

cjaywang
Offline
Last seen: 10 years 10 months ago
Joined: Tuesday, July 3, 2007 - 02:34
Points: 17
Re: Best way to charge LiFePO4 pack?

Hi Hopbot,

A LiFePO4 battery is no memory effect, so you can recharge whenever you want. Since deepcharge reduces life time, just like to any other types of battery, it is a good idea recharge every time after used. If the charger reach 100% you should remove the battery. However, many charger only gives a tiny green indicator when charge rate reached 80% or higher, so you might need to leave it longer to make sure full recharge. A good charger comes with overcharge protection. That gets you problem free even if forgot overnight.

Jay, Taipei

hopbot
hopbot's picture
Offline
Last seen: 12 years 11 months ago
Joined: Sunday, June 24, 2007 - 18:35
Points: 25
Re: Best way to charge LiFePO4 pack?

thanks Jay, that clarifies my confusion.

2007 Dahon Matrix - Cyclone 500w - 17Ah 24V LiFePO4

arohahai
Offline
Last seen: 12 years 11 months ago
Joined: Tuesday, August 21, 2007 - 00:49
Points: 4
Re: Best way to charge LiFePO4 pack?

I was told by our technical people that I should initial discharge them at 1C before starting to use them.The low cutoff voltage of single cell is at 2.0V, so the whole packs should be 24*2= 48V when I initial the discharge. So that the battery packs could still provide 800 cycles in the future. By the way, the LiFePO4 packs I use is 36v/15ah/2c.

Bernie
Bernie's picture
Offline
Last seen: 12 years 10 months ago
Joined: Thursday, December 14, 2006 - 08:39
Points: 14
Re: Best way to charge LiFePO4 pack?

:?
hopbot, what are you using the LiFePO4 packs on?

hopbot
hopbot's picture
Offline
Last seen: 12 years 11 months ago
Joined: Sunday, June 24, 2007 - 18:35
Points: 25
Re: Best way to charge LiFePO4 pack?

@Bernadine: using it with a 500W Cyclone BB drive kit

2007 Dahon Matrix - Cyclone 500w - 17Ah 24V LiFePO4

2007 Dahon Matrix - Cyclone 500w - 17Ah 24V LiFePO4

Log in or register to post comments


Who's online

There is currently 1 user online.

  • israndy

Who's new

  • Naadu_b@
  • SolarRichT
  • victoria098
  • PtheDude
  • Gilles

Customize This