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Expion360 Battery Manual, G24 and G27
Rev 2
07/18/2022
6
Battery Life
The battery is considered to reach the end-of-life (EoL) when the remaining available capacity is less than 80% of the
original capacity. The cycle life of Expion360 batteries is tested at a charge/discharge rate of 0.2C/1C, 77°F, and 100%
depth-of-discharge (DoD). Please note that many factors can affect battery cycle life. Using the recommended charge
and discharge rates will offer longer life to your batteries.
DoD:
The cycle life of our G24 and G27 batteries is tested by discharging the batteries to a 100% DoD. The optimal window
for operating LFP batteries is a DoD between 20% and 80%. To accommodate this, slightly over-size the capacity of the
battery bank so that the DoD is about 80% for each cycle. This is beneficial to the batteries and will help to prolong the
battery life. For example, in a 12 Vdc system, if 200 Ah is required for each cycle, the battery bank is recommended to
have a 240 Ah capacity.
Operating Temperature Range:
Operating LFP batteries at extremely low or high temperatures will significantly decrease their cycle life. Please make
sure the battery bank is well ventilated, or cooled during high temperatures and kept heated at low temperatures.
Maximum battery life can be achieved when operating temperatures are as close to 77°F as possible. We advise
installing our heating blankets (
) with your batteries to protect them from extreme cold and to keep them close
to ideal temperatures.
Charge/Discharge Rate:
Charging and discharging the battery at higher than recommended rates will generate more heat within the cells. Since
temperature is the primary factor that affects the cycle life, consider the charge/discharge specifications with regards
given to ambient temperature extremes when configuring your battery power system. The specifications page at the end
of this manual considers both safety and the maximum life cycle when recommending optimal parameters for the battery
system.
Storage Condition:
Most users will see their batteries in storage more often than active daily use. To prolong the battery life during periods
of storage of one month or longer, please give careful consideration to the following instructions in
