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Old 02-26-2018, 07:19 PM   #1
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Question Lithium-ion House Battery?

Considering replacing the OEM house battery with a 12.8 volt 50Ah lithium battery. Has anyone switched over and does it require any changes to the electrical system? Recommendations appreciated. Thanks!
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Old 02-26-2018, 07:38 PM   #2
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Why a 50AH? do you have a smaller rig?, or always stay at full hookups?. Just curious why the small battery. I was at Quartzsite and spent a lot of time grilling the vendors about LiFeP04 batteries, they are the future of power storage, both those and Solid State batteries which are just emerging. The cost is still up there, I want 2 100AH 12v LiFePo4 batteries for my coach, 3-4 times the usable power than my two 6v golf cart batteries, zero maintenance, lighter at 30lbs each, and will get a full charge in 3 hours from 20% (providing you can supply the 100amps they will take. But the lowest price I have found so far is $720 EACH. My DW says when the 6v batteries go we can get them, makes me consider sabotage .
Almost forgot to answer your other question, no changes to your electrical system as they are drop in replacement. They use the AGM charging profile without the Float option enabled, so you need a charger that you can control like a Progressive Dynamics PD9000 series.
I use a 50AH LiFeP04 battery as a trolling motor battery for my boat, works great.
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Kelderman Air Ride, Safe-T-Steer, Supersteer Trak Bar rear w/ Sumo Springs.
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Old 02-26-2018, 07:55 PM   #3
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Trying to keep the cost down, but on second thought should probably look at the 100Ah. Looking at hitting places with shore power for a while until my DW gets more comfortable otherwise. What's involved in enabling the Float option? Sorry, we're getting ready to receive our new Alante and trying to see what I can take care of sooner rather than later as far as upgrading.
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Old 02-26-2018, 08:23 PM   #4
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Yes, they are expensive at the moment, but are coming down slowly. As delivered the Alante has a single stage charger (like mine did), this is a compromise, it is not good for flooded batteries to be kept at 13.6V all of the time. The LiFePo4 batteries charge at 14.2 to 14.4 and will accept their rated amperage for the full charge cycle,(why they charge so fast) so Float & Trickle is not needed or wanted. You cannot make any changes to a single stage charger, hence my installing a PD9260c smart charger, which will allow me to make changes, such as locking out float charging. My solar Tracer40 amp charger is also a smart charger and has a wide range of settings. I would have gone with the PD9280 (80amp) charger for even faster charging on the LiFePo4 batteries except it draws 20amps at rated power (the batteries would draw it all) and I only have a 30amp coach, that wouldn't leave much excess power for the three hour charging cycle. I really want these batteries as we boondock a lot, and battery power is very important, but as long as my 6v batteries are still good I can't justify the cost.
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2016 Alante 26AY
Roadmaster Braking, BlueOX Tow Bar.
Kelderman Air Ride, Safe-T-Steer, Supersteer Trak Bar rear w/ Sumo Springs.
200 amp Lithium house batt w/solar 40A charge & 2500 watt whole house Inverter.
2006 Honda CRV Toad
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Old 03-21-2018, 01:25 PM   #5
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Do you have an inverter in your unit?
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Old 03-21-2018, 03:36 PM   #6
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Quote:
Originally Posted by Cryn View Post
Do you have an inverter in your unit?
Yes I do, I installed a 2500 watt pure sine wave to run everything except the A/C unit. I went the easy way, instead of putting in a separate panel for just those circuits I want to power I just plug the shore power into the inverter output via a standard RV plug I mounted in the shore power box. This does power the entire coach so I have to remember to force the fridge to gas (as we boondock it stays on gas pretty much all of the time) and turn off the inverter when not needed. (also turn off the converter when on inverter).
I don't use the converter much in any case as the 600 watts of solar keeps the batteries fully charged.
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2016 Alante 26AY
Roadmaster Braking, BlueOX Tow Bar.
Kelderman Air Ride, Safe-T-Steer, Supersteer Trak Bar rear w/ Sumo Springs.
200 amp Lithium house batt w/solar 40A charge & 2500 watt whole house Inverter.
2006 Honda CRV Toad
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Old 07-06-2018, 05:19 PM   #7
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Well, ordered two 100 amp LiFePo4 Lithium house batteries along with a Progressive converter drop in 60 amp (Lithium) charging module for my power center. This should more than double the available power over the flooded golf cart batteries. Plus they will charge 3-5 times faster. Batteries were $423 EA plus $300 air express for both, 5 year warranty and comprehensive BMS with 3K-5K cycle life. Even at 3000 cycles they should last 20 years with proper care. We don't camp in freezing weather, nor do we live in an area that gets below 20 in winter. Will be nice not to have to watch battery use like a hawk, and zero maintenance. Alternator will only charge to 70% (13.8v) but Solar (gel mode set to 14.6v) or genset (converter) will top them off fast.
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2016 Alante 26AY
Roadmaster Braking, BlueOX Tow Bar.
Kelderman Air Ride, Safe-T-Steer, Supersteer Trak Bar rear w/ Sumo Springs.
200 amp Lithium house batt w/solar 40A charge & 2500 watt whole house Inverter.
2006 Honda CRV Toad
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Old 07-06-2018, 05:33 PM   #8
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Quote:
Originally Posted by JesseS View Post
Well, ordered two 100 amp LiFePo4 Lithium house batteries along with a Progressive converter drop in 60 amp (Lithium) charging module for my power center. This should more than double the available power over the flooded golf cart batteries. Plus they will charge 3-5 times faster. Batteries were $423 EA plus $300 air express for both, 5 year warranty and comprehensive BMS with 3K-5K cycle life. Even at 3000 cycles they should last 20 years with proper care. We don't camp in freezing weather, nor do we live in an area that gets below 20 in winter. Will be nice not to have to watch battery use like a hawk, and zero maintenance. Alternator will only charge to 70% (13.8v) but Solar (gel mode set to 14.6v) or genset (converter) will top them off fast.
WOW! Some really awesome stuff is out there. Thank you for posting the info. My pockets aren't deep enough to consider it, but maybe someday...
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Old 07-06-2018, 05:55 PM   #9
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Originally Posted by oldmanAZ View Post
WOW! Some really awesome stuff is out there. Thank you for posting the info. My pockets aren't deep enough to consider it, but maybe someday...
We Dry-Camp a LOT!, so having plenty of worry free battery power is very important. As for the $$$, well, being retired empty nester's what else am I going to spend it on? I certainly don't want to hoard it so my kids can enjoy it, that's what that expensive education was for.
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2016 Alante 26AY
Roadmaster Braking, BlueOX Tow Bar.
Kelderman Air Ride, Safe-T-Steer, Supersteer Trak Bar rear w/ Sumo Springs.
200 amp Lithium house batt w/solar 40A charge & 2500 watt whole house Inverter.
2006 Honda CRV Toad
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Old 07-06-2018, 09:11 PM   #10
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Wow JesseS that sounds like a great upgrade! Keep us updated on how it works for you. Can you post where you bought them so we can go there and drool?
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