For a cordless pool robot, the warranty line that distributors and pool service operators care about is battery cycle life, not peak runtime on a single charge.

The 500-cycle test envelope is the industry-typical threshold at which a Li-ion or LiFePO4 pool robot battery retains usable capacity (typically 80% of original rated capacity).

This article walks through the IEC 62133-2 and UN 38.3 compliance reference, the Li-ion vs LiFePO4 chemistry trade-off, the capacity fade curve across 100/250/500 cycles, and the five battery spec lines an OEM procurement audit must capture before sign-off.

AquaJack 650 cordless pool robot. The cordless class shown is the deployment envelope for which the 500-cycle battery test envelope applies.

Image: Poolstar product archive.

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