exploding batteries
#1
I had my clusterboard run for about two months and today i've turned it of to add new modules. but when i turned it back on, within a minute, one of the bateries exploded. Well started to bubble and sprayed some juice out.

Is this a common thing for normal batteries explode in cluster board, or was it just a rare case? Just a general AA alkaline batteries.

so 20 minutes later, another set of batteries - another explosion Sad

and the think i've did today was: adding 3 SOEdge boards next to 3 SOPINE boards

what is this?
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#2
Explosion seems a bit hyperbolic, no?

But likely it is related to this: https://forum.pine64.org/showthread.php?tid=5849

Should not happen with fresh batteries though, but IMHO probably better to not use batteries at all.
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#3
(06-11-2021, 03:42 PM)poVoq Wrote: Explosion seems a bit hyperbolic, no?

But likely it is related to this: https://forum.pine64.org/showthread.php?tid=5849

Should not happen with fresh batteries though, but IMHO probably better to not use batteries at all.

if you can a popping sound that is heard to the second room and close surface sprayed over by battery liquid hyperbolic then yes - however i have other opinion

after removing SOEdge modules and getting back just to SOPINE modules everything fine, no more battery explosions.... however i didn't bought SOEdge modules not to use them
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#4
It must be (over)charging the batteries. It shouldn't happen, but you could add a diode to prevent it.
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#5
(06-14-2021, 12:52 PM)alembiq Wrote:
(06-11-2021, 03:42 PM)poVoq Wrote: Explosion seems a bit hyperbolic, no?

But likely it is related to this: https://forum.pine64.org/showthread.php?tid=5849

Should not happen with fresh batteries though, but IMHO probably better to not use batteries at all.

if you can a popping sound that is heard to the second room and close surface sprayed over by battery liquid hyperbolic then yes - however i have other opinion

after removing SOEdge modules and getting back just to SOPINE modules everything fine, no more battery explosions.... however i didn't bought SOEdge modules not to use them

So with 7 Sopine it works? But the SoEdge cause problems? That would be interesting.

So far I assumed it was just a question of the number of modules, because if you read the thead I linked above carefully it seems like each Sopine module feeds back a bit of electricity into the circuit, and when there are a lot of Sopines and weak batteries, it could cause the problems you describe.
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#6
(06-14-2021, 07:03 PM)poVoq Wrote:
(06-14-2021, 12:52 PM)alembiq Wrote:
(06-11-2021, 03:42 PM)poVoq Wrote: Explosion seems a bit hyperbolic, no?

But likely it is related to this: https://forum.pine64.org/showthread.php?tid=5849

Should not happen with fresh batteries though, but IMHO probably better to not use batteries at all.

if you can a popping sound that is heard to the second room and close surface sprayed over by battery liquid hyperbolic then yes - however i have other opinion

after removing SOEdge modules and getting back just to SOPINE modules everything fine, no more battery explosions.... however i didn't bought SOEdge modules not to use them

So with 7 Sopine it works? But the SoEdge cause problems? That would be interesting.

So far I assumed it was just a question of the number of modules, because if you read the thead I linked above carefully it seems like each Sopine module feeds back a bit of electricity into the circuit, and when there are a lot of Sopines and weak batteries, it could cause the problems you describe.



It works with 3 SOPINE, but it complains about 3 SOPINE and 3 SOEdge
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#7
I see, so probably just a question of the number of modules.

Anyways the thread linked above suggests several possible fixes, but I just removed the batteries made a small hardware fix to still allow rebooting and run the clusterboard off a ATX power-supply connected to an UPS.
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