Hi everyone,
I thought as I am seeing some odd charging profiles whilst trying to recover used lead acid batteries that it may be of use to discuss observed phenomenon so that we may identify battery issues or inappropriate charging techniques at the earliest opportunity. After all there is no point to having a great energiser, because it is!, but waste it on poor uneducated application of these devices that can result in damaged batteries or we waste days on useless batteries.
As an example I had one battery short while charging and fried all my neons, and 1/2 my diodes. Fortunately the transistors were ok!
Had I realised that the wild swinging of voltage before was a precursor to failure, I wouldn't have persevered with the charge.
I am yet to disassemble to definitively identify the issue.
Whilst I wait to save enough for two new quality batteries to do my COP testing I'm attempting to recover some other used batteries.
First example is a lead acid that is charging with the superpole energiser (4 transistors) and is boiling and gets to about 14v with a slow climb. After connection is terminated the battery slowly falls away to about 10.5v. It is regular LA and bubbles vigorously while charging.
Second is a 7Ah 12v gel cell. That even though fairly new sems to not get above 12.5v and bubbles audibly as soon as it is placed on the energiser.
Is boiling batteries with energisers unhelpful and damaging!
When using regular chargers I would only boil cells until all were equalised.
Your experiences, advice please!
I thought as I am seeing some odd charging profiles whilst trying to recover used lead acid batteries that it may be of use to discuss observed phenomenon so that we may identify battery issues or inappropriate charging techniques at the earliest opportunity. After all there is no point to having a great energiser, because it is!, but waste it on poor uneducated application of these devices that can result in damaged batteries or we waste days on useless batteries.
As an example I had one battery short while charging and fried all my neons, and 1/2 my diodes. Fortunately the transistors were ok!
Had I realised that the wild swinging of voltage before was a precursor to failure, I wouldn't have persevered with the charge.
I am yet to disassemble to definitively identify the issue.
Whilst I wait to save enough for two new quality batteries to do my COP testing I'm attempting to recover some other used batteries.
First example is a lead acid that is charging with the superpole energiser (4 transistors) and is boiling and gets to about 14v with a slow climb. After connection is terminated the battery slowly falls away to about 10.5v. It is regular LA and bubbles vigorously while charging.
Second is a 7Ah 12v gel cell. That even though fairly new sems to not get above 12.5v and bubbles audibly as soon as it is placed on the energiser.
Is boiling batteries with energisers unhelpful and damaging!
When using regular chargers I would only boil cells until all were equalised.
Your experiences, advice please!
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