Cordless electric water guns run on a rechargeable lithium battery instead of hand-pumping, which is exactly what makes them fun — but it also means battery life is worth understanding before the first backyard session, not during it.

How long does a charge last?

It's built around a rechargeable lithium battery for fully cordless play. As a rule of thumb, most batches of backyard play get a full session out of one charge — think a birthday party, a backyard water fight, or an afternoon in the pool, not multiple days of heavy use.

What actually drains it faster

How you fire it matters more than how long you're outside. Continuous, nonstop firing pulls a lot more from the battery than shorter, intermittent bursts — holding the trigger down for long stretches drains it noticeably faster than firing in normal water-fight bursts with pauses in between. If you want to stretch a charge across a longer event, encourage shorter bursts rather than one long continuous stream.

Getting the most out of one charge

Bottom line

One charge is built for one solid session of play, not an all-day marathon — and firing style affects runtime more than almost anything else. Charge it fully before your event, encourage burst-firing over holding the trigger down, and it'll comfortably cover a typical water fight or party from start to finish.