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June 2017 -
"You might be interested to know that in the three years I have had your lithium batteries I have run the generator only once, and that was because of a long period of crap weather so no solar, and only short driving days.
We are relentless users of 12V power. Compressor fridge in the van, and car fridge used as a freezer but run from the Karavan batteries when camped. Via the inverter the coffee machine is used daily, the microwave a bit less so and a small clothes iron and hair dryer used occasionally (don’t ask!). All pull about 130 to 150 amps through the inverter, though only for a short time. We have 440 watts of solar, 200 on the van roof rarely optimally oriented to the sun, but supported with 240 watts of portable panels which I keep pointed at the sun.
Car charging is via a 25 amp dc-dc charger with a near lithium profile. Could be more, but that is what I have from my old AGM system. Solar reg is a lead acid GSL 30 amp with voltages set to approximate lithium voltages, as we have discussed some time ago. Ditto the 40 amp mains charger.
Overall the system is fabulous. I cannot speak highly enough of it and your advice.
Cheers Frank "
May 2017 -
I hope all is going well with you my friend.
Rodney, I wanted to write and say how very happy we are with the performance of your battery set up. I know it’s early days for us, but it really is proving to be everything we had hoped for an more. ...
We usually charge at just over 200A when the AC charger is operating and the alternators together with solar will see us at around 380A sometimes.
I remember you saying we should not charge over 400A being 50% capacity. I also think your referred to this as .5C or something like that ? Googling C rating is a mine field for me …
Anyway, we are happy customers and are recommending folks to go the EV POWER route … thank you for everything your did for us to get Impi on track.
Brent and Ana"
"I just love your batteries. I am a great supporter of your batteries and have given your number to quite a few fellow travellers after talking to them about the batteries. I just love them as they make energy management so much easier.
"We went away for a two day week end & after coming home allowed the 130 litre fridge/freezer to run for another two days. At that point the battery was
reading 12.4 volts.
This battery is just amazing. I thought you would like this feedback & yes you may quote me if you wish.
"Just a short note to let you know your batteries are performing very well - the 180AH house battery charges at 80A+ with the charge voltage set to 14.5V (there is a 0.4V drop at full charge)and once full the charge current rapidly tapers off over a few mins, goes to <1A and then stops altogether. The only thing is to advise boaties to make sure they have good programmable voltage regulators (mine is a Balmar) and have voltage sensing at the battery not the alternator. The voltage holds up beautifully even down to 25% capacity, which is as low as we have run them. The little 240v charger has performed fine so far (it is probably not quite marine grade but I have protected it as well as I can and we will see how it goes). It is quite powerful enough for our purposes.
Anyway, your end of it is working fine, I wouldn’t ever go back to lead acid batteries now I have these."
" I’d just like to let you know how the batteries are going and to know from yourself that your happy with the way they are being charged and looked after. So far it seems we don’t seem them fall below 74% on our Xantrex lite meter. It seems the regulators bring them up to around 94-98% fully charged each day but then on the second or third day they do a full charge up to 100% as they did today.
We are super happy with them and love the way they take charge so quickly. It would be good to make sure we are doing all we can to make the system work as well as it can. I’d like to get the most out of these batteries so would like to treat them in the best manner possible.