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Battery Cutting Out
- Thread starter Eglwyseg
- Start date
You say the voltages appear okish for each cell,
Now put them under load and then check the loaded volts
Good example of voltage sag from a fully charge LG 18650 that is failing.
Perfect off load voltage in pic 1
Now check the battery symbol once I had fired it for 4 secs
Excuse poor focus as it wouldn't lock on through the plastic screen
Perfect off load voltage in pic 1
Now check the battery symbol once I had fired it for 4 secs
Excuse poor focus as it wouldn't lock on through the plastic screen
Okay folks, good news tonight, though my wallet, a hell of a lot lighter. I have bought a 15.6 amp/hour lithium battery from Ebay and it was delivered today mid morning. Read some do's and dont's from the supplier, then put it to charge for a few hours.
My last battery, a 9 amp/hour came with a dedicated rear carrier so I had to do some mods to make the new battery fit and make secure. Nice job actually!
Rained all bloody day here but a small window at about half four and was able to get my new bike rig out for a road test. Bloody hell! What a spanking new battery does! Just outside my village is a short hill and have 'helped' the old battery, in the past, with a bit of pedalling since last year.
Determined not to stress the new battery I was ready to physically pedal for a few hundred yards but no worries the bike simply took it in its stride and flew up the hill, no problem.
Once again for the good folk who pointed me in the right direction, that my old battery was knackered and simply needed new. Job done!
I'm going to break up the old battery as some cells are probably okay and can run my Cree torches for a season or two.
Cheers all!
This is for the Techies especially but hope many more will find some interest.
As reported in an earlier post it was my intention to strip the old battery in the hope that some of the cells were well enough to fire up my Cree torches.
All cells came away easily enough but one or two have rather raggy ends from where they were welded onto their bus-bars.
Out of forty cells, three showed a couple of volts and dropped rather rapidly when putting the multi-meter across them, clearly, completely duff, not holding a charge. One cell showed 3.5 volts, not at all perfect but it did fire up the Cree but haven't a clue how long that cell would continue. Then there were twelve cells registered, 3.85 volts and the rest came in at 3.95 volts.
Clearly, three were duff, one other at least below par, a further twelve, obviously going down. Twenty four, out of forty cells, rather well, is not good.
As an aside, I have been out today and so delighted I pushed the boat out and purchased a far higher rated battery than my old one, you will recall, the old battery was 9 amp hour, the new 15.6 AH. On this particular ride today, my old battery would have exhausted 75% to nearly all the charge, in the days it was well, of course. The new battery has used a up a mere 25% but now on the charger and will be taken off as soon as we hit the green, 'charged' light. The best way, the savvy folk here, recommend, to lengthen the 'usable' life of Lithium.
A very pleasant afternoon even if a did get caught in a shower. Tut!
Hi,
E Plus Folding Electric Bike and with rear battery from Argos and it has been at least 3-4 year since I bought it.
Battery is cutting out and turning itself off, but after switching the battery off and on again it shows full charge.
Battery type is Li-ion Battery 24V/7Ah
S/N TFL 24717L20014
Do I need a battery replacement or can anything be done to fix this ?
I will appreciate any suggestion.
Thank you.
E Plus Folding Electric Bike and with rear battery from Argos and it has been at least 3-4 year since I bought it.
Battery is cutting out and turning itself off, but after switching the battery off and on again it shows full charge.
Battery type is Li-ion Battery 24V/7Ah
S/N TFL 24717L20014
Do I need a battery replacement or can anything be done to fix this ?
I will appreciate any suggestion.
Thank you.
If when you put your bike in the lowest assist level and cycle gently along a flat road the battery stays on, but if you then put the bike into a higher/highest assist level and give it some welly the battery dies/cuts out, it likely is a knackered/sagging battery.
Many of the lower-cost 24v e-life, e-plus, e-whatever folding bikes use this direct replacement style of battery. If your battery looks different, you'll need to post a picture.
Hi,
Thanks for replying, my battery exactly like that on the images.
You gave me the link for direct replacement style of battery, does this mean my battery can not repaired now ?
And in that link it says without original battery shell, does this mean I would need to re-assemble my battery cells?
24V10.4Ah Lithium-ion Rear E-Bike Battery Pack without Original Battery Shell
Mine is 7 Ah and the one above is 10.4 Ah will this be ok for my bike?
Thank you.
What you see in the suppliers pictures is exactly what you get; a brand new replacement battery with nearly 50% more capacity, giving you nearly 50% more range. That's because they're using higher capacity cells. By "without shell" they mean it slides into your existing carrier; it doesn't include the mounting/carrier/frame part which is already on your bike. If in any doubt, ask them.
IIRC there is someone on Facebook called Steve from Wolverhampton who might be able to repair your existing battery. If you search the forum here you'll find a discussion where another member here had his old battery - similar to your own - "fixed" and was delighted with it.