Battery warranties vary dramatically — from worthless 6-month statements to comprehensive multi-year warranties backed by financially stable manufacturers. Understanding warranty language is essential before making a major purchase.
Pro-Rata vs Full Replacement
Pro-rata warranties reduce obligation over time. A 2-year pro-rata warranty might pay 100% in year 1, 50% in year 2, nothing after. Full replacement warranties provide complete replacement at no charge during the warranty period.
Common Warranty Exclusions to Watch
- Abuse and misuse: Improper charging, physical damage, operation outside temperature specs
- Unauthorized repairs: Opening a sealed battery typically voids warranty immediately
- Self-discharge damage: Failure from extended storage in discharged state often excluded
- Non-specified chargers: Using an unapproved charger may void warranty
What a Good Warranty Covers
Manufacturing defects causing premature failure, capacity below 80% of rated Ah within warranty period, charging anomalies from defective cells, and physical defects under normal use conditions.
How to File a Claim Successfully
- Keep proof of purchase: invoice, delivery receipt, packing slip
- Photograph battery label (model, batch code, date) before installation
- Record installation date and report failures promptly
For warranty terms: sales@chisen.cn
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