#157883  by johnny
 Thu Jan 09, 2020 1:09 pm
been talking to more experts again??. haha

Some suggest not to use the VSR unit when replacing an AGM setup with Lithium po4 .
If the alternator is eg. 80 amp, the 270A/h po4 will accept all that current and any more as its rated input is 150Amp .
If the original Vehicle's wiring loom is not capable of carrying that load for say 60 - 90 minutes , some have gone up in smoke ==bad.

another expert ?? also commented on the ability of this battery to stay cool enough if this type of energy [eg 80 amps]is imputed for long periods. Most manufactures recommend charging in 2 stages . maybe this is to do with internal heat and this 270 A/h having no cooling system fitted which can be seen.

I note from a previous posting that 800 w of solar brings everything up grade by app. 10am
 #157887  by Nut17
 Thu Jan 09, 2020 1:33 pm
With our 800 watts of solar we can get around 60 amps charge in good conditions. However, at present the battery has usually dropped from 300 Ah to about 260 remaining by 6.00 am when I fire up the electric hot water for our morning showers. This will take about 65 - 70 Ah out dropping the battery to just under 200 Ah. I then switch the 3 way gas fridge to 230 volts, flick the heated towel rail on, brew a Nespresso double shot coffee and Marg microwaves her breakfast after using the hair dryer. Nett result, we still have to put back around 110 Ah. With good sunshine and the fridge / heated towel rail drawing about 15 amps it is often 2 - 3 in the afternoon before we get back to full. Will generally give the electric hot water another boost - still aiming to have the battery full again by sundown. Our motto is. "If you have got it - Use it"
 #157901  by divxmaster
 Thu Jan 09, 2020 1:45 pm
@Johnny,
Not sure about charging the micromall 270AH at 150amps,
the seller told me 10-30a, but 40-50a should be fine.

Cheers,
Mike.
 #157914  by johnny
 Thu Jan 09, 2020 2:19 pm
The original plan was to remove the tired AGM's and the cranking battery with this 270ah or 1800 caa battery in the Hi-ace.
Obviously that has been shelved as videos show the alternator will go up in flames as it will overheat eg traffic lights. during low engine revs.

There is a marine alternator version available which is suggested that can take the heat .

there are drop in po4 battery 270ah and 1800 caa for sale in the us for $US 2.8k

this group seems to know whats what. thanz for the link.
https://thegreynomads.activeboard.com/t ... -or-false/
 #157917  by johnny
 Thu Jan 09, 2020 2:35 pm
from another group ;

Behn Bolton How do these handle cold cranking loads? Can the be used as an aux start system
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ITechworld

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ITechworld Behn Bolton they can’t be used for that type of application, they are storage only
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