Battery "Explosion"


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Old 02-25-14, 10:59 AM
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Battery "Explosion"

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Hi everyone. I've had a couple of batteries "explode" (see image) while being charged and i'm not sure why. The charger i'm using is a Schumacher CR2 and should protect from over charging. It is inconsistent, the battery packs typically work just fine but randomly this happens. What would cause this? Why would it be inconsistent?

This is a 24V DC system using 2 x 12V 5Ah Batteries.

I am in Alberta Canada, but as the system is standalone I don't believe this falls under any building codes. This system is part of a unit that will eventually be sold all over N. America.

Any help or insight would be appreciated! Thank you!
 
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Old 02-25-14, 11:47 AM
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I don't see anything in the picture that appears to have exploded. Is there another picture? Was that picture taken perhaps just before the explosion?
 
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Old 02-25-14, 03:54 PM
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The swelling can be considered an explosion, even though it did not break the casing. I have no idea why other than the elctronics in the charger are no longer working to specifcations.
 
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Old 02-25-14, 07:37 PM
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Swelling of SLA (sealed lead acid) is due to overheating, usually due to overcharging, usually due to too much voltage upon full charge. Check your voltage, insure it does not exceed 28 volts DC. Also, make sure the batteries are each around 14volts max.
 
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Old 02-25-14, 09:04 PM
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That Schumacher charger should work fine with lead acid batteries.

You never told us what kind of batteries you are using.


This system is part of a unit that will eventually be sold all over N. America.
Then you'll want to make good and sure you've got a 100% compatible charger/battery system.
 
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Old 02-26-14, 09:03 AM
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Thank you all for your responses.

You never told us what kind of batteries you are using.
My apologies for the oversight they are Interstate BSL1055.

Then you'll want to make good and sure you've got a 100% compatible charger/battery system
Absolutely which and why this causes concern.

make sure the batteries are each around 14volts max.
14.4V each so they are definitely overcharged. As PJmax pointed out the charger should work fine. But everything seems to point towards the charger, is it a few bad charger(s) or if we are using the wrong one?
 
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Old 02-28-14, 05:20 PM
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Sealed lead acid needs a half volt to .7 v lower than wet cell lead acid during charge. 14.4 will overheat and swell SLA's.
 
 

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