Why Battery Health Matters
Lithium-ion batteries chemically age with charge cycles and usage time. Over time, maximum charge capacity decreases relative to when the battery was brand new.
On refurbished devices, battery health is one of the most important indicators of daily usability. A phone with high battery health will deliver longer screen-on time between charges.
The TrueVolt Battery Health Scale
When sellers provide battery capacity details, TrueVolt maps the percentage to a transparent four-tier scale:
| Range | Tier Label | Condition Context |
|---|---|---|
| 90–100% | Like New | Near-original capacity with minimal previous cycling. |
| 80–89% | Excellent | Strong capacity providing dependable daily endurance. |
| 70–79% | Acceptable | Moderate capacity; suitable for lighter daily usage patterns. |
| 60–69% | Fair | Reduced capacity; may require more frequent mid-day charging. |
What if Battery Health is Not Disclosed?
Not all sellers or operating systems expose battery capacity metrics. When battery health is not provided by the seller, the listing will clearly indicate that it is not disclosed.
In these cases, buyers should evaluate the device with extra care during in-store inspection, checking for steady battery discharge and asking the store about its battery testing procedure.
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