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Old 10-07-2013, 11:48 AM   #1
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Lithium Ion Batteries

Hi I'm looking for folks who have actually installed Lithium Ion Batteries. What has been your experience. Have you had any problems? Do you need a pure sine wave inverter? Has the difference in weight affected on handling, fuel milage, or tire wear? Would you do it again? And finally are they worth it?


Thanks
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Old 10-07-2013, 12:18 PM   #2
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These guys did it and have been running on them over a year. Good info on their blog:
http://www.technomadia.com/category/...y/lithium-ion/

Nina
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Old 10-07-2013, 12:33 PM   #3
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Check out

LiPo batteries as well. There was a thread about them here a few weeks ago. Expensive, but interesting anyway.
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Old 10-08-2013, 09:32 AM   #4
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Hi Nina, Thanks I have been reading their stuff for awhile. I only know of two folks who have put them in their coaches. I was hoping there were more folks out there who had done it and what their experience is.
Thank You for your reply
John
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Old 11-18-2013, 12:53 PM   #5
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We got our original information from the

\Lithium Ion Batteries for RVs | Technomadia

poster.

Our son Cary is an alternative energy designer and installer. He should have paperwork signed today or tomorrow for sub-contract on a 1.5 megawatt solarsystem. He designed our system using LFP batteries from Manzanite Micro

Manzanita Micro

They primarily fabricate LFP battery packs for vehicles (autos, boats and motorcycles).

We have 1.4 kW of solar, 4.0 kW pure sine-wave inverter and 4 LFP battery packs in series for 54 V (nominal). Power comes from solar at 54 V and then goes to inverter and/or 12 V converter. The battery pack system stores 9.7 kW-hours (720 amp-hours at 12 V nominal) for a total weight of 160#. LFP can be discharged to 20% capacity for thousands of discharges and down to 10% for several hundred while PbS can only be safely discharged down to 50%. We would have had to had around 800# of PbS for equivalent power storage.

We undoubtedly went overboard but Cary designed the system to be autonomous. We have run the 1.5 kW air conditioner for over 3 hours as combination of solar and battery discharge. We did not get down to 50% capacity doing this.

We are exceptionally pleased with the results and have not hooked into shore power except to test out the battery chargers. Have dumped 50 amp cable and now will only utilize 15 amp extension cord to run system.
Reed and Elaine Cundiff
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Old 11-19-2013, 11:16 PM   #6
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Thanks

Hey Reed that's great information. Please keep us posted here on how the system is working.
Thank You


Quote:
Originally Posted by Reed Cundiff View Post
We got our original information from the

\Lithium Ion Batteries for RVs | Technomadia

poster.

Our son Cary is an alternative energy designer and installer. He should have paperwork signed today or tomorrow for sub-contract on a 1.5 megawatt solarsystem. He designed our system using LFP batteries from Manzanite Micro

Manzanita Micro

They primarily fabricate LFP battery packs for vehicles (autos, boats and motorcycles).

We have 1.4 kW of solar, 4.0 kW pure sine-wave inverter and 4 LFP battery packs in series for 54 V (nominal). Power comes from solar at 54 V and then goes to inverter and/or 12 V converter. The battery pack system stores 9.7 kW-hours (720 amp-hours at 12 V nominal) for a total weight of 160#. LFP can be discharged to 20% capacity for thousands of discharges and down to 10% for several hundred while PbS can only be safely discharged down to 50%. We would have had to had around 800# of PbS for equivalent power storage.

We undoubtedly went overboard but Cary designed the system to be autonomous. We have run the 1.5 kW air conditioner for over 3 hours as combination of solar and battery discharge. We did not get down to 50% capacity doing this.

We are exceptionally pleased with the results and have not hooked into shore power except to test out the battery chargers. Have dumped 50 amp cable and now will only utilize 15 amp extension cord to run system.
Reed and Elaine Cundiff
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Old 11-24-2013, 07:47 PM   #7
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Very early lithium ion battery usage in RVs

I was talking to a friend from Army days (we were both on Team 4 of 173rd Airborne Bde LRRP Platoon). We got into talking about lithium ion batteries. Back in the late 1970s or early 1980s, his father-in-law was working as a civilian supply specialist at an Army depot and they wound up with some excess or discarded lithium ion batteries from a Navy fighter. No one knew what to do with them so he took them (with permission I am told) and installed them in his TT. These were 2.5 V batteries and he packed them as 5 battery in series suites (12.5 V) and they worked well. I have no idea what military grade lithium ion batteries cost in that time period but you could have probably bought a Prevost for the cost to the military at that time.

I doubt if anyone had a lithium ion powered TT before that time.
Reed and Elaine Cundiff
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Old 11-28-2013, 10:56 AM   #8
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Hi Reed, Happy Thanks Giving I hope it finds you well. A couple of questions what kind of coach do you have and how many lead acid batteries and what size did you replace with your system.
Thanks
John
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Old 11-28-2013, 11:06 AM   #9
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perfect battery bank

Seems like this might be the perfect battery bank for usage when you want to install a residential fridg.
Loren
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Old 11-28-2013, 11:14 AM   #10
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Quote:
Originally Posted by Reed Cundiff View Post
We got our original information from the

They primarily fabricate LFP battery packs for vehicles (autos, boats and motorcycles).
LFP stands for Lithium Iron (Fe) Phosphate which is a bit different than the regular lithium ion batteries. LFP is supposed to be safer because it doesn't create thermal runaway with the associated risk of fire. The energy density of LFP batteries is enormous.
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Old 11-29-2013, 09:08 AM   #11
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Perhaps we are on string under a false flag. We have a 5th wheel and not a coach. The rig we have is an Open Range 337RLS. This has a dry weight of 8500# and a max weight of 12500# so one can carry a lot of weight; unfortunately, there is a lot of space.

On previous rig (same Open Range 337RLS) we had 4 x 115 amp-hour (or thereabout) glass mat matteries. These were six years old at time of wreck and were doing great. However, they were quite heavy and we always weighed the rig fairly often on CAT scales. We came close to maxing rear axle loading of the GMC pickup.

We now have about 4 times the usable electric power at perhaps half the weight. We would have been over pin weight if we had greatly increased the number of glass mat batteries. One would also run out of space to emplace them. There is another poster on the Open Range forum who has placed six x 110 amp-hour batteries in the front compartment of his rig; however, this is over 400#.

We did get a "dualie" Chevie to replace the wrecked GMC and this increased rear axle loading by 2000#. We are 1000# under on trailer axles, 1100# under rear truck axle and right on for front axle. This was with full 81 gallons of fresh water, full propane, 35 gallons in fuel tank, 50 gallons of diesel in the Transfer-Flow auxiliary tank/tool kit and 42 gallons of extra water in plastic Jerry cans.

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