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6. FAQ / TROUBLESHOOTING
6.1 Frequently asked questions (FAQ)
Can I continue to use my previous
charger?
Which LiFePO4 battery do I need to
replace my two heavy AGM batteries
with 95Ah each?
Should the lithium battery remain
permanently on the charger over
winter?
In my vehicle it sometimes gets
50°C and more in the summer. Will
this damage my lithium battery?
And what does it look like at
sub-zero temperatures?
Do the batteries fit into the installation
space in which my previous
batteries were installed?
Does the lithium battery always
or regularly have to be completely
discharged?
Is it true that lithium batteries are
very expensive compared to lead
batteries?
It depends on which charger is installed. If the charger
has a setting for GEL or AGM batteries, it can usually be
used. However, the final charging voltage should not exceed
14.6V. Charging curves for lead-acid batteries with
liquid electrolyte must not be used. Ideally, the charger
should have an IU characteristic curve for LiFePO4 batteries.
If the previous capacity was sufficient, two 95Ah AGM
or gel batteries can be replaced with one 100Ah battery.
This is not necessary, on the contrary. Charge the
battery to approx. 60-80%, then disconnect or disconnect
the battery from the vehicle.
The lithium batteries can be operated up to 60°C without
any problems.
Discharging down to -20°C is also possible here, but
when charging below 0°C, charging must be limited or
prevented. This can be done with a charge booster and /
or a temperature-controlled charger.
If 92-95Ah AGM batteries or 80Ah GEL batteries were
installed, the lithium battery will also fit, it has the same
dimensions and mountings. In the VW Bus the 90Ah fits
under the seat, in the Ducato the 100Ah.
No, lithium batteries do not have a memory effect, they
can be operated constantly in a partially charged state.
No, the opposite is the case. Lithium batteries have
the lowest costs per cycle compared to lead batteries,
this is due to the high number of cycles. Of course, the
purchase price is many times higher, but here, too, prices
have fallen sharply in recent times.
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