We also have some NiCad packs, and can get sealed lead acid packs for customers on request, please see our store pages or contact us.
Introducing the Cycle9 Almost Forever, PHET LiFePO4 battery pack, made by PHET/Pihsiang for top reliability and performance
We have them in stock, ready to
ship from our store!
LiFePO4 is a fancy name for a new battery chemistry, that combines the light weight of lithium batteries, with exceptional long life, safety, environmental neutrality (no battery is truly enviro-friendly, but some are a lot less haramful than others), and low-temperature operation ability.
This battery comes at a price premium, but easily pays for itself over the long haul (see our FAQ for a comparison of battery chemistries and their lifetime cost effectiveness). It is estimated that under normal operation, this battery will last approximately 25,000 miles or more if properly cared for*. That's a lot of miles on a bike! Nothing lasts forever, especially not batteries, but these last almost forever.
Stop lugging around heavy and environmentally unfriendly lead acid batteries, and get yourself a Cycle9 Almost Forever Battery.
• The battery comes with a rail that can be mounted to a bike rack, with a locking mechanism and key. You can unlock the battery, slide it off, and take it inside to charge in a matter of seconds. No wires to mess with.
•The battery has a built-in state of
charge meter that lets you know how much juice is left.
• The Almost Forever Battery has
sophisticated protective circuitry that prevent under-discharge and
over current, in addition to balancing out cell voltages to extend
Here is the inside:
(please don't try this at home - opening your battery case up voids the warranty and runs the risk of short circuit)
• We can custom configure the power connector to suit your particular configuration for an extra, small fee.
Technical Details•Two configurations: 24 Volt and 36 Volt
•24 Volt has 9.6 AH capacity.
•36 Volt has 7.5 AH capacity.
•Each weighs in at just under 10 pounds.
•Continuous current is limited to ~22Amps by battery protection circuitry. It can spike higher to >30A for brief periods. As with any battery, running it
for long periods at high current reduces battery life.
•Minimum operating temp: -5 degrees Fahrenheit
• Warranty: 2 years from date of purchase. Warranty void if battery is opened, tampered with, short circuited, or not stored in charged condition.
• Custom charger available.
*Battery life will depend on many factors including depth of discharge, temperature, recharging, and etc. Your mileage may vary.
Cycle 9, LLC
Chapel Hill/Carrboro North Carolina