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Old 10-25-2021, 12:40 PM   #1
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39Fk Riverstone Lithium Batteries

I'm considering upgrading to lithium batteries, but only the ones that will fit in the battery tray. One of batteries I'm looking at are SOK 206AMP FOUR OF them but I've Hurd you have to bend the end of the tray to make them fit.
What do I also have to replace because Lithium batteries.
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Old 10-25-2021, 01:12 PM   #2
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You do not need to replace anything.

You should make certain your converter has the proper profile for charging lithium batteries. If not you will always have partially charged batteries.

You should also get a shunt-based battery monitor, as the typical volt-meter based monitor in RVs will not give you a clue about your battery status.

After that, people start looking at changing the wire size from converter to batteries to take advantage of the ability of the batteries to charge faster. Not needed, but it helps.

If you have 800 amp-hours of battery, adding a hybrid inverter is a good thing.

Moving the batteries to an interior location is another wise move, for security and for temperature control.

If you get this far down the rabbit hole, a lot of solar panels are always nice.
2018 F350 Limited, 2021 Arctic Fox 27-5L
300 Ah Battleborn LiFePo4 batteries
3kw Victron Multiplus hybrid Inverter
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Old 10-26-2021, 09:41 AM   #3
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Location: Beaver Dam, Wisconsin
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You may get buy with adding nothing. You may not. If you want to put 100 or 200 amp hours of lithium in a travel trailer, you may get buy with doing nothing else. 800 amp hours is another beast.

Look at the battery charging specifications. 1C means batteries can absorb 800 amps at 14.4 volts. What will this do to your tow vehicle alternator and tow wire harness?

The tow vehicle probably has a circuit breaker so it will protect the wire and the alternator, but tow vehicle charging will be interrupted when it trips.

Recommended changes:
  • Heavier wire to battery bank from alternator and from the built in charger.
  • B2B charger between alternator and battery bank to prevent alternator overheat. This is more important for Motor Homes than tow vehicles, but still a possible problem. See alternator specs for maximum rated output.
  • Bigger built in charger with constant 14.4 volt charge profile for faster charging.
  • Install Lithium in a heated space for below freezing charging. Heating pads are available for lithium batteries, but discharging also has limits and heating pads are practically limited to charging situations.
Paul Bristol
Kodiak Cub 176RD
Nissan Pathfinder 2015
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lithium, batteries

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