Winter Battery Storage - Basement with Water Heater

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  • Updated 2 years ago
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Per Page 8 of EGO Battery Manual, Batteries can vent Hydrogen gas. Can battery vent Hydrogen in a fully charged, stored (read off charger) state?

Is it safe to store in a relatively small basement with water heater, not in close proximity to water heater?
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Posted 2 years ago

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Lead Acid batteries can vent significant amounts of hydrogen gas while being charged.  

LiIon batteries have a different chemistry, and should not be venting much gas of any type under normal usage (discharge/charge).  I would expect you to be fine especially if you are just storing them.
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I used to design lead gel acid battery systems.  In a non-charging state (off the charger), I would expect that the amount of Hydrogen gas would be quite low.

 Low enough to insure that an ignition source such as a water heater pilot light could not cause ignition is uncertain (perhaps EGO knows?)  and would depend on a variety of conditions such as:

  • Ambient temperature
  • Distance between gas (battery) and ignition source
  • Air flow - Storage area air tightness

I have rethought storing the battery in my basement and am going to store it in a hall closet - one floor up. I located a plastic battery storage case on Amazon for the 7.5 Ah battery.  Advantages:

  • Plastic -  Non conducting. No risk of shorts
  • Vented - To release any small amount of Hydrogen gas, permitting it to dissipate into ambient air
  • Cover - To protect from accidental material (metal?) entry

Please see:

This should cover all my bases. Those with young children may want to store on an upper shelf out of reach.
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Blue Angel, Champion

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Storing it on a flat shelf with the contacts pointed down would be a pretty safe bet. I understand if you have small kids you might want to go above and beyond just to be safe.
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Beth Walsh

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I am using the plastic kitty litter containers in a hall closet. I will cut vents in the side.
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Theresa Pipes

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Wow, had no idea! I just posted on another thread about storing the battery, no mention of out gasses. I will not snug it up to anything, I have a finished room that is not used. Should be ok there in the closet. But the breaker box closet is there too, in another closed cabinet. Hmm. Keep posting, we are learning a lot Blue Angel.
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Blue Angel, Champion

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Personally, I’m not worried about lithium batteries out gassing. People charge their cell phones and tablets on a daily basis in bedrooms while sleeping, for example. Yes Ego’s batteries are bigger but we’re only charging them once a week or so.