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Enphase IQ Battery 5P has water in the wiring compartment

Water or moisture has got into the wiring compartment of an Enphase IQ Battery 5P installed outdoors, where it damages internal parts. This page covers what to check first and the cause behind it.

What to check first

  1. If your IQ Battery 5P is outdoors, ask your installer to check that every conduit entry into the wiring compartment uses watertight connectors and fittings, and that every cover screw is fully tightened.
  2. Enphase states that failing to seal the wiring compartment voids the warranty and leads to denied battery replacement claims. Ask your installer whether the compartment was sealed that way.
  3. Ask your installer to look inside the battery's wiring compartment for water or moisture. Moisture that gets in there damages the battery's internal parts.

The causes and the fixes

Partners see the causes behind this problem, most common first, the checks that tell them apart, and the fix for each, with part numbers and recent prices when a part is involved.

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