Batteries‎ > ‎

What battery to buy?

 There is a dizzying array of options available for ebike battery packs. I'm not going to list all the options available because there are just too many, but I can recommend the sellers and options that many people happily use. There are lots of cheaper options, but saving $100 by buying from someone who may not speak english, understand what they're selling, or have any interest in providing support is just plain dumb.


    Ping has been selling ebike batteries for several years now. The packs are made using low powered lifepo4 pouch cells. For a light ebike they're perfect, and many people have been using them trouble free for years. I myself have close to 10,000 miles on mine! Ping may be more expensive than other "ebay" lifepo4 packs, but he has an outstanding history of customer service.
  • 36v15ah lifepo4
  • Built by Ping
  • $470
  • 2.5a charger - 6 hour charge time (upgradeable to 3 hours)
  • 12lbs
  • 15a continuous - 30a max discharge


    Cell-man is a British guy in China who builds and sells genuine a123 battery packs. They're expensive, but they're also made from the most powerful lifepo4 chemistry available. A123 may be overkill for a low powered ebike, but at least you won't be boxed into a lower powered battery if you ever want to upgrade your pack!

  • 36v11.5ah lifepo4
  • a123 cells - built by cell-man
  • $500
  • 2a charger - 7.5 hour recharge time (upgradeable up to 1 hour)
  • 11lbs
  • 70a continuous - 207 a max discharge

Headway headquarters:


    Headway cells are very popular with larger electric vehicles. They're a bit bulky, but come at a good price and are bit more powerful than most lifepo4 cells. With their "lego" building blocks they're very modular and easy to work with. Headway Headquarters is a newer company. While their prices are a bit higher than Chinese based sellers, I feel it's worth it to have some one in America do the testing, construction, and customer service.
  • 36v10ah lifepo4
  • Headway cells - built by headway headquarters
  • $500
  • 5a charger - 3 hour recharge time
  • 10lbs
  • 30a continuous - 60a max discharge

A nice, plug and play pack that comes with a rack. Also available from cycle 9 in the states.
  • 36v9ah lifepo4 
  • Made by Ezee
  • $600
  • 4a charger - 2.5 hour recharge time
  • 9lbs
  • 20a continuous


Sealed Lead acid:

    Sealed lead acid requires very little work, but if you don't have a soldering iron you'll need to buy a wiring kit, and that accepts the plug from the charger. I really can't recommend SLA batteries for ebikes, but I realize that for many it's the only option they can justify buying. I started with a SLA pack, but quickly upgraded to lithium. I've documented the reasons in my article, "Lead doesn't belong on an ebike." That being said, they are a very rugged, easy, and inexpensive foray into electric bikes.

Hobby king lipo:

    Hobby king is a retailer that focuses on the remote controlled market. Conveniently, the batteries used in R/C airplanes and cars work great for ebikes. The batteries them self are dirt cheap and capable of much higher power output than even the best lifepo4. They're also much lighter and smaller. They come in modular packs that can easily be swapped around an to any configuration that you want. It's also super easy to upgrade by ordering more packs. However, they require a lot of work to use safely. The risks of destroying the batteries or causing a fire is very real. There are many tools available to use lipo safely and many people use it daily with no problem. Ypedal has written a great intro to using lipo here.