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Old 12-28-2017, 04:18 PM   #1
Mini-Skoolie
 
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Battery Bank - Lead Acid or AGM?

6x 6v 190AMP AGM for $280 ea for $1600

OR

4x 6v 260AMP Flooded for $184 ea for $800


Pros - AGM over Flood
- No maintenance
- No need for venting

Pros - Flood over AGM
- Cheaper
- Virtually the same amp hours



Hard to see why I would go with AGM tbh but a lot of people we've talked to go with the more expensive option.

We will be living where it gets down to low teens, might leave our bus for a month or two here and there for car trips.

Venting isn't really an issue (doable, have space) but wanted to see what y'all had to say.
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Old 12-28-2017, 05:44 PM   #2
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Quote:
Originally Posted by McPuccio View Post
6x 6v 190AMP AGM for $280 ea for $1600

OR

4x 6v 260AMP Flooded for $184 ea for $800


Pros - AGM over Flood
- No maintenance
- No need for venting

Pros - Flood over AGM
- Cheaper
- Virtually the same amp hours



Hard to see why I would go with AGM tbh but a lot of people we've talked to go with the more expensive option.

We will be living where it gets down to low teens, might leave our bus for a month or two here and there for car trips.

Venting isn't really an issue (doable, have space) but wanted to see what y'all had to say.
Trojan T105-RE for $170-ish

As many as you need following your calculated energy budget.
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Old 12-28-2017, 06:07 PM   #3
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Quote:
Originally Posted by Twigg View Post
Trojan T105-RE for $170-ish

As many as you need following your calculated energy budget.
I think these are pretty close to the flooded ones we are looking at. Anything particular that puts these over the top of other flooded 6vs?
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Old 12-28-2017, 06:19 PM   #4
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Originally Posted by McPuccio View Post
I think these are pretty close to the flooded ones we are looking at. Anything particular that puts these over the top of other flooded 6vs?
Only their reputation for build quality and longevity.
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Old 12-28-2017, 08:35 PM   #5
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GC2 6 volt golf cart batteries at SAMs, 84 dollars each
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Old 12-28-2017, 10:52 PM   #6
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While on the topic of batteries...

I had been looking at some Optimas but discovered they seem to have been having lots of problems lately. Lots of info/discussion online. Just wanted to pass that along.
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Old 12-28-2017, 11:34 PM   #7
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Best price ive seen. NOT include core charge. Sams Club
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Old 12-29-2017, 04:37 AM   #8
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As noted, you can find relatively inexpensive 6V 220ah-ish flooded batteries - around $90-$100. Even Batteries Plus has a good option (SLIGC115 - Duracell Ultra High Capacity 6V Golf Cart Battery - 230ah are about $100)

Skipping over the commonly available AGM vs. flooded information...

What are YOU like - are you a good owner? Are you going to have a quality battery bank monitoring system and never discharge them below 50% SOC? Are you going to have a quality multi-stage charger? Are you going to water the flooded batteries on a regular schedule? If no to any of these, I would get the cheapest battery possible because you are likely going to destroy them fairly quickly.

On the other hand, if you are going to be a good owner, you will likely get very good life out of a set of batteries. Seven to ten years is not unheard of, so spending extra for quality, name brand batteries is not a bad thing. Of course, even the inexpensive batteries seem to have very good life when taken care of properly.

Available space and access might matter. If you are going to hide these away in tight spaces, the AGM's might be nice. Whether hidden away or accessible, a watering system is SUPER convenient for the flooded batteries - makes watering a very quick and easy task.
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Old 12-29-2017, 06:59 AM   #9
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How do lead acid batteries hold up in extreme temperatures as they will be more likely to be housed underneath the bus w/ the need of venting?
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Old 12-29-2017, 10:36 AM   #10
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Quote:
Originally Posted by dspizzle View Post
How do lead acid batteries hold up in extreme temperatures as they will be more likely to be housed underneath the bus w/ the need of venting?
They hold up well if they are kept charged. If they are allowed to go much under 50% charge, they are at risk when it is extremely cold.

Again, the Trojan (RE) I mentioned will be better than the golf cart batteries. They are designed for energy storage and built tougher than golf cart batteries.
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