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-   -   EarthX Battery (https://vansairforce.net/community/showthread.php?t=176236)

FlyingFox44 10-22-2019 06:46 AM

EarthX Battery
 
For the RV14a builder, using the QB Firewall, Plane Power Alternator that comes on the Thunderbolt 390, did the ETX680 fit without modifying the battery box?

Any other specifics about the install to a G3X System would be appreciated.


Thanks,

bkervaski 10-22-2019 07:27 AM

I found some pics! https://imgur.com/a/HIi4S8N

Bavafa 10-22-2019 09:13 AM

Quote:

Originally Posted by FlyingFox44 (Post 1381254)
For the RV14a builder, using the QB Firewall, Plane Power Alternator that comes on the Thunderbolt 390, did the ETX680 fit without modifying the battery box?

Any other specifics about the install to a G3X System would be appreciated.


Thanks,

The answer is yes for the battery box, though not sure what the relevance the alternator has in relation to the battery box. I have installed the EarthX in the original battery box with no issues.

I would recommend looking at the poll related to the failure rates of the alternator based on brands.
I am using a B&C alternator.

Discus2b 10-22-2019 12:19 PM

Fit? Almost.
I tried a EarthX and as the photo above shows, the EarthX is a tad deeper and will not drop completely into the box. It may be close enough for you.
I also had to use longer bolts and washer spacers for the cross tie bracket as I didn?t like the bracket end tabs bending inwards as the bolts were tighten.
I was satisfied but the uncertainty of the LiPo holding up to the compartment temperature had me go with an Odyssey again.

R

bkervaski 10-22-2019 01:11 PM

Quote:

I was satisfied but the uncertainty of the LiPo holding up to the compartment temperature had me go with an Odyssey again.
They are LiFe not LiPo ... two completely different chemistry's. LiFe is considerably more stable.

Both the Odessey and the EarthX have a 140F recommended max operating temp.

hgerhardt 10-22-2019 04:15 PM

Quote:

Originally Posted by bkervaski (Post 1381343)
They are LiFe not LiPo ... two completely different chemistry's. LiFe is considerably more stable.
.......

Actually, it's LiFePO4, so you're both somewhat correct. (4 in subscript)

bkervaski 10-22-2019 04:46 PM

Quote:

Originally Posted by hgerhardt (Post 1381368)
Actually, it's LiFePO4, so you're both somewhat correct. (4 in subscript)

LiFe (or LiFePo4) = Lithium Iron Phosphate
LiPo = Lithium Polymer

My point really was ... avoid applying what you read about LiPo batteries to LiFe batteries such as the EarthX. The LiFe chemistry has proved to be very reliable and safe.

Interestingly .. LiFe will hold constant voltage until fully discharged then the voltage will drop of drastically whereas other chemistry's will gradually draw down the voltage.

I've seen many LiPo's explode :D

emsvitil 10-22-2019 05:59 PM

4 LiFePO4 batteries in series is a good match for a 12v lead acid.

The fully charged voltage is 3.6v each or 14.4v

And as stated previously, they have a flat discharge curve.

jdmrv7a 10-22-2019 06:00 PM

Interesting, Those pictures above happen to be my RV14-A. My Apple iCloud account is the only place I have kept those pics.

That is a EARTHX ETX-900 in the Van's Quickbuild battery holder. Yes it fits fine. I have a 180 hours on that battery currently and it has performed well. The battery weighs 10 lbs less than lead OD680.

Discus2b 10-23-2019 08:26 PM

LiFe...yep....say what you mean , mean what you say. My error, thanks.
As for the battery box, the photo shows appears to show the battery is not fully seated, as I experienced with my EarthX install into a Vans QB box.
Perhaps my box is flawed from Vans. The OP with find out soon enough.

R


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