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LA or Lithium Iron battery?

LA lithium lron suggestion

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#1 Lucas Mill

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Posted 12 August 2019 - 03:17 AM

Lithium lron has more cycle span and capacity, safety. So why AGM still recommended for RVs? thus I had read this article: https://blog.grepow....acid-batteries/

 

When i choose the battery for RV, should i consider the cold or hot temperature features?


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#2 Machinebuilder

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Posted 13 August 2019 - 01:20 PM

the Choice between Flooded Lead acid, AGM, or LiFePo usually comes down to cost.

 

for similar AmpHour capacities

FLA = $$

AGM = $$$$

LiFePo = $$$$$$$$

 

any of the shortcomings of any type can be managed.


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#3 CougarCouple

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Posted 13 August 2019 - 03:23 PM

Lucas Mill
I would think that all features as well as cons for each should be considered. Just one thought could be if you spent a lot of time in freezing temps. How would you keep lithium batteries warm enough to take a charge. What would be the cost to do that.
I don’t think the only factor could or should be battery cost.
I currently have two 79ah LA batteries. Might be I could get by with just one 100ah Lithium battery. Which would reduce weight, providing additional storage, and currently live in a warm climate. So the change to one battery with longer cycles, sounds like a no brainer. I should be able to double the time between battery replacement.

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#4 JaSAn

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Posted 13 August 2019 - 04:08 PM

LiFePO4 batteries outperform LA with two notable exceptions:

  1. cost per usable AH per years of useable life,
  2. difficulty of charging in below freezing temperatures.

The second one is a deal killer for me.


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#5 Beach

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Posted 13 August 2019 - 06:23 PM

Besides price; Compatibility with your truck battery if charging the camper battery while driving can be an issue. Lead acid can also be a problem if it is in a non ventilated compartment. 


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#6 buckland

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Posted 13 August 2019 - 10:35 PM

Basic tutorial... for the $ LiFePo4 is wicked cheap and light... doing the math...

Edited by buckland, 14 August 2019 - 12:00 PM.

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#7 Lucas Mill

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Posted 22 August 2019 - 08:01 AM

LiFePO4 batteries outperform LA with two notable exceptions:

  1. cost per usable AH per years of useable life,
  2. difficulty of charging in below freezing temperatures.

The second one is a deal killer for me.

Yes...that true, on my understanding there have two ways to charge at freezing temperature
 
1. Special charger to heat up the battery;
2. BMS/PCM with self-heating.
 
But I consider that it may spend a lot of time for heating, so LiFePO4 batteries may be better except the charging problem?

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#8 Lucas Mill

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Posted 22 August 2019 - 08:03 AM

the Choice between Flooded Lead acid, AGM, or LiFePo usually comes down to cost.

 

for similar AmpHour capacities

FLA = $$

AGM = $$$$

LiFePo = $$$$$$$$

 

any of the shortcomings of any type can be managed.

LiFePO4 Battery is free of maintaining cost, so it may more economical, is that true?


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#9 Lucas Mill

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Posted 22 August 2019 - 08:08 AM

Lucas Mill
I would think that all features as well as cons for each should be considered. Just one thought could be if you spent a lot of time in freezing temps. How would you keep lithium batteries warm enough to take a charge. What would be the cost to do that.
I don’t think the only factor could or should be battery cost.
I currently have two 79ah LA batteries. Might be I could get by with just one 100ah Lithium battery. Which would reduce weight, providing additional storage, and currently live in a warm climate. So the change to one battery with longer cycles, sounds like a no brainer. I should be able to double the time between battery replacement.

Russ

Apperaciate for your advice, it is costly for heating up the battery?

Edited by Lucas Mill, 22 August 2019 - 08:08 AM.

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#10 buckland

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Posted 22 August 2019 - 10:56 AM

I think this might help. I can't think of a time when my camper inside would be allowed to get down to 30º while I was in it. I have a thermostat heater. Everything else about these batteries is better.  Here is a convincing video by Will who is the go to guru on build.

The overall comparison:


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