Dc/ac inverters

[jodge]

For best result get 6000W inverter and you need new caravan battery connect direct to your main van battery, with all that you can cut keys and use all electrics all day long.

Without battery balancing it's killing your batterys. Plain and simple.

[maaxxyy]

My bms is a balancer, you can set it to static balance or set it to balance whilst charging.

[fred77]

Check this out, reasonable price to make a diy lifepo4 (what i use), but the bms they sell are a little on the high side -
https://shop.gwl.eu/LiFePO4-cells-3-...u-case-CE.html

And for a good bms with bluetooth (similar to what is use)-
https://www.ebay.co.uk/itm/smart-BMS...Yd-El2K5dnYi7Q

And for all the info you'll ever need on building a battery -
https://www.mobile-solarpower.com/

Will Prowse is a top bloke! Check him out on youtube, he has loads of videos on how to kit out your van or camper.

thanks for links in end gone with
https://www.aliexpress.com/snapshot/...Id=33035453389

and
https://www.aliexpress.com/item/3298...36e24c4d6dmeY0

reviews are good

[maaxxyy]

First link not working

[autoTkey]

Guys, what you need all that power for - 4000W, 6000W ?!
Are you making pancakes in there?

Ours is just 800W(peak 1600) real sine from Victron attached to car battery and is quite enough for one key cutting machine (most machines are 150-200W max so at peak not more much more than 1000W) or a heat station.
You always use just one consumer at the same time anyway.

[fred77]

Yes and limited - so 12V x your battery capacity thus for me 12V x 200ah = 2400 watts.
Inverver I've bought is 3000 watts just to be safe. Also cheap ones out there so hopefully money well spent. Victron good make.



Powerwise everything can add up - key cutters are just 1 item im thinking battery support unit and hot air desoldering etc may all want to use at once.
Sure overkill to an extent


Youtube vids (very clever guy) -
Bought this 20 amp DC-DC charger from USA
https://www.youtube.com/watch?v=EcVjPap9dkY&t=108s


Interesting page -
https://www.mobile-solarpower.com/ra...eals-page.html


Battery link -
https://www.aliexpress.com/item/3303...00368-kR2gtZ32

[maaxxyy]

Good choice, at least now you have a system which last a long time. Those cells look like CALB cells, which are good quality. Make sure you buy a decent bms for the battery pack with bluetooth preferably (phone app to set it up).

[ult]

Hi,
i have a large motorhome, with lots of electrical components :
vehicle-battery 12V 80Ah LiFePo4
camper-battery 12V 480Ah LiFePo4
Generator 120V 6.5 kW running on LPG
Transformer 120V/230V (bidirectional) 3.5kW
Victron Multiplus 12/3000 120/16 = charger with 120A, inverter 3kW, also works as "booster" for the 230V line, the unit can be set to the rating of the supply-fuse
DC-DC booster 12V 30A for charging while driving
700 Wp solar with 5 panels and two victron mppt controllers
Victron battery-manager

The camper needs ~2A as base load ( 48Ah / day ), with heating etc. ~15A ( 200Ah / day ).