The Global Battery Repository.
Open-source specifications, health predictions, and second-life valuation models for the energy transition.
How It Works
From specs to second-life value
in three steps.
Search any device
Find your battery by name, model, or chemistry. We index phones, EVs, energy storage, and wearables.
View degradation curve
See real capacity fade over time using the TUM additive aging model with knee-point prediction.
Get second-life valuation
Instantly know if a battery is viable for energy storage second-life or only worth scrap recycling.
Trusted Data Sources
Our specifications are cross-referenced against academic research, OEM datasheets, and independent laboratory testing.
CALCE
NASA
OEM Datasheets
NREL
Independent Labs
2,934
Devices Indexed
TUM
Aging Model
Knee
Point Detection
OEM
Verified Specs