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Open Roads Forum  >  Truck Campers

 > Are lithium batteries worth the cost?

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moonlitsouls

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Posted: 04/21/21 07:37am Link  |  Quote  |  Print  |  Notify Moderator

I just built a 280ah DIY Lithium phosphate battery for a total of $700 ,

1 x 100ah battle born goes for over $1000 so i got basically 3 of them for $700 fully built with the highest quality BMS , wires and lugs

Its fully programable and i can monitor/change settings using a bluetooth enabled app. If you're willing to take on that challenge you can save big. I am in the process now of sourcing another 280ah to double up on my bank giving me some serious boondocking capabilities with 560ah , upgrading the solar as well from 380 watts to almost 800w , should be fun

bighatnohorse

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Posted: 04/21/21 07:51am Link  |  Quote  |  Print  |  Notify Moderator

It depends on what you mean by "worth it".
If you purchase lead acid batteries and take them back to the store where you bought them within the warranty time you may just find that they will give you new replacement batteries under warranty.
Costco did that for me and I understand that other stores do the same.

theoldwizard1

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Posted: 04/21/21 08:19am Link  |  Quote  |  Print  |  Notify Moderator

Don't Waste Your Money On Batter........vered When Testing RV Batteries

This is a 36 minute video comparing various battery chemistries and manufacturers (sorry, no SiO2). My "executive summary" is LiFePO4 is the winner because of their life expectancy and depth of discharge (down to near 0% SOC).

Good old FLA 5V golf cart batteries performed well and were the lowest cost, but also a much shorter lifespan.

The interesting footnote was, AGM are really not worth the additional cost unless you are willing to pay the premium price for no liquid !

Kayteg1

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Posted: 04/21/21 08:28am Link  |  Quote  |  Print  |  Notify Moderator

When going camping, I am taking batteries from my sedans and boat.
No cost to me.
AGM batteries were design for upside down applications and are excelent for what they are design.
For camper use- it is just led-acid battery.





Camper_Jeff_&_Kelli

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Posted: 04/21/21 08:43am Link  |  Quote  |  Print  |  Notify Moderator

Kayteg1 wrote:

When going camping, I am taking batteries from my sedans and boat.
No cost to me.
AGM batteries were design for upside down applications and are excelent for what they are design.
For camper use- it is just led-acid battery.


In defense of AGM, I switched to AGM in the belief that as they got older, there would be no crud build up between cells that could vibrate lose while driving along rough forest and backroads causing cells to short out. That has happened to me twice with the truck battery and twice with the TC batteries while using FLA batteries. I now have AGM all around, matching electrical characteristics, and never had another cell short out from vibration like driving lots of washboard gravel road. Just my 2 cents.


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Avid Fox

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Posted: 04/21/21 08:59am Link  |  Quote  |  Print  |  Notify Moderator

My regular batteries are not failing at all, they just don't last long enough when you get accustomed to using the inverter for stuff. We rarely plug in for camping.

jaycocreek

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Posted: 04/21/21 09:40am Link  |  Quote  |  Print  |  Notify Moderator

They are definitely worth it,especially for a truck camper..100ah lifepo4 batteries start around $399 with quite a few in the $400 range and a bunch in the $500 range...Buy 2 good agm's for 100ah and your in the $400's..Most lifepo4 advertise 2000 cycles to 0% and of course more at 20%/30% or less..

There lighter and charge faster..Just last week I put 50ah back into my battery in less than 3 hours making it 100% full..Can't do that with my lead acid..I am 6 hours short of 10 days using my Engel fridge/freezer set at 35 degree's and I am at 43% battery capacity on my 120ah lithium battery.

My battery spread sheet say's 6000 cycles to 80% and I paid less than $600 tomy door for 120ah and I am glad I went this way for my TC..To each there own but you don't have to buy a Battleborn and pay there price because the competition is growing fast and as said above,DIY lifepo4 are cheaper yet and easy to do anymore..

JMHO

Kayteg1

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Posted: 04/21/21 10:11am Link  |  Quote  |  Print  |  Notify Moderator

jaycocreek wrote:

They are definitely worth it,especially for a truck camper..100ah lifepo4 batteries start around $399 with quite a few in the $400 range and a bunch in the $500 range...Buy 2 good agm's for 100ah and your in the $400's.

Add required B2B charger and you are in 4-digits very fast with dual lithium.
As I said, using batteries from my boat and sedan cost me nothing, beside some inconvenience.
Flooded batteries still sell for $70.
When lithium are on my watch list, I will wait for them to come down to $250 to consider.

* This post was edited 04/21/21 10:41am by Kayteg1 *

jaycocreek

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Posted: 04/21/21 10:19am Link  |  Quote  |  Print  |  Notify Moderator

Quote:

Add required B2B charger and you are in 4-digits very fast.


That's funny,I don't have one..lol

Your a redneck of sort with work arounds..Easy to do..A B2B is not necessary..

Grit dog

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Posted: 04/21/21 10:44am Link  |  Quote  |  Print  |  Notify Moderator

Great choice for all the obvious reasons, save for temperature.
If you’re using them in the cold, need to think about your battery scheme.


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