Tool batteries work hard and age according to heat, discharge depth, charge history and power demand. The biggest longevity advantage comes from a platform that continues to sell compatible replacement packs.
What commonly determines lifespan
Capacity fade, cell imbalance, thermal stress, damaged contacts or housing
This profile is an editorial summary of sourced lifespan context, common service points, maintenance leverage and repairability. See the linked methodology and primary reference before treating any range as a guarantee.
