Geek
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Before returning it, connect a battery charger for a few hours.
BRand new LiFePo battery arrived and has no volts
- Thread starter GWAYGWAY
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GWAYGWAY
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I tried it at 14.7 volt but nothing went in, they re requested a video of me checking it and I sent the pictures they then sent me a return label and I have received a full refund.
I have given up on the idea of a lithium battery and kept to lead acid. Saving myself a lot of money and faffing about with B2B charger, MPPT. Solar charger and mains charger, all of these are in the Electroblok system that Hymers fit but they only allow the gel or wet battery setting no lithium so that would have involved more big changes to the whole vehicle electric system. I can squeeze another 100 watt leisure battery in so that will give a bigger reserve.. I will be passing the van for my son to use as he does have a. C1 license as he was a fireman and he a fair time to go before he hits seventy and can drive the 4200 kilo van without worrying about the weight being too high. I was looking to drop the weight so I can still drive it.
I was trying to to get the mods to fit lithium to a HYMER but the only person that I know is the esteemed leader who packed his old HYMER with electrical power. ( Hinkley Point 3) Trouble is I do not know where to look on the site where he put it alll down about lithium batteries.
I have given up on the idea of a lithium battery and kept to lead acid. Saving myself a lot of money and faffing about with B2B charger, MPPT. Solar charger and mains charger, all of these are in the Electroblok system that Hymers fit but they only allow the gel or wet battery setting no lithium so that would have involved more big changes to the whole vehicle electric system. I can squeeze another 100 watt leisure battery in so that will give a bigger reserve.. I will be passing the van for my son to use as he does have a. C1 license as he was a fireman and he a fair time to go before he hits seventy and can drive the 4200 kilo van without worrying about the weight being too high. I was looking to drop the weight so I can still drive it.
I was trying to to get the mods to fit lithium to a HYMER but the only person that I know is the esteemed leader who packed his old HYMER with electrical power. ( Hinkley Point 3) Trouble is I do not know where to look on the site where he put it alll down about lithium batteries.
Nabsim
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I ran my lifepo4 through all the EBL gear just set to GEL for a while. GEL was very close to the charging profile for my battery. I just used to turn the mains charger off when battery were fully charged if I was on hookup (rare). And I still have to split charge system fitted with the EBL in place and working 98 ears on) even though I do have a B2B. That was a mistake on y part as I thought I had disabled it, obviously not caused any problems having the split charge though so am leaving it in now
MERL
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Lithium isn't fussy at all about charging, it's more about applying enough voltage for long enough to allow the BMS to balance the cells.
Charging to just 13.6 volts will charge to over 95%, charging to 13.75 will achieve 100% but a lot of BMSs won't start equalising the cells until 13.8v or over. The vast majority of lead acid chargers exceed that voltage including either setting on the EBL charger so either will work, just don't leave it on float for weeks on end as Neil suggested.
Upper voltage isn't critical either, I've seen lithium manufacturers suggesting anywhere between 14.2v and 14.8v. I've seen research suggesting that there's no detrimental effects of charging to over 15v. Again virtually all lead acid chargers fit the bill. So the only reason for swapping out a lead acid mains charger would be the lead acid charger has a maximum Ah limit because this suggests that the charger could overheat or get stressed if it's running continuously for too long. Because Ah per Ah lithium charges at full current for longer than LA then any Ah limit on the charger should be dialled back somewhat, I'd suggest a 50% rating so apply a 100Ah lithium limit for a LA charger rated at 200Ah just in case. If there's no Ah limit then technically the charger is continuously rated and there's no limit on battery capacity.
Charging to just 13.6 volts will charge to over 95%, charging to 13.75 will achieve 100% but a lot of BMSs won't start equalising the cells until 13.8v or over. The vast majority of lead acid chargers exceed that voltage including either setting on the EBL charger so either will work, just don't leave it on float for weeks on end as Neil suggested.
Upper voltage isn't critical either, I've seen lithium manufacturers suggesting anywhere between 14.2v and 14.8v. I've seen research suggesting that there's no detrimental effects of charging to over 15v. Again virtually all lead acid chargers fit the bill. So the only reason for swapping out a lead acid mains charger would be the lead acid charger has a maximum Ah limit because this suggests that the charger could overheat or get stressed if it's running continuously for too long. Because Ah per Ah lithium charges at full current for longer than LA then any Ah limit on the charger should be dialled back somewhat, I'd suggest a 50% rating so apply a 100Ah lithium limit for a LA charger rated at 200Ah just in case. If there's no Ah limit then technically the charger is continuously rated and there's no limit on battery capacity.