Fogstar battery and victron charger (1 Viewer)

Oct 19, 2013
450
738
East Yorkshire
Funster No
28,639
MH
Elddis Autoquest 115
Exp
Few years
Hi all
My 300ah Fogstar drift has just arrived
Looks a good piece of kit!
It’s at 50% charge so have connected it to my victron main charger.

Does anyone have the same Fogstar setup!
Interest to know if I just use the built in lithium profile or if I would be better using advanced settings to set voltages for absorption And bulk - the manual gives contracting settings (14.4 and 13.8) and on the online help it says 14.4 for both

Thanks

R
 
Jun 29, 2022
43
121
Bishop Auckland, UK
Funster No
89,576
MH
Autocruise
Exp
2009
Hi Richard,

Same here but we got the 280Ah version. I started it off with the default lithium setting then modified it to match the Fogstar specs as stated in their manual. It seems to be charging slightly faster but the charger is really warm. Ours is the 12 30 IP22 and from the look of things is only recommended for batteries up to 250Ah.

From what I've seen so far, I'm very impressed with the quality. Hopefully it'll get a full test next weekend.

Cheers.

Dave
 
Sep 17, 2017
5,591
10,456
Birmingham, UK
Funster No
50,575
MH
A-Class
Exp
2017
My FogStar 280Ah arrived today. I'm also going to use a Victron AC charger with it. I only got a IP22 that charges at 20 amps. When I bought it last year, I was planning to get a far smaller battery. I don't think it matters that much as when I plug in, it'll be for +12 hours at a time anyway. The only issue with having a smaller charger is it takes longer.
 
Oct 24, 2020
579
2,426
Funster No
77,187
MH
VW
Exp
Since 2017
Best of luck with the upgrade 👍


For others info- When I bought a lithium battery upgrade the guys at Roamer talked me through my settings on the phone at 8pm on a Saturday evening!

That’s service for you
 
Feb 27, 2011
14,841
76,952
UK
Funster No
15,452
MH
Self Build
Exp
Since 2005
Just checking which batteries were best value and if 2 smaller ones were better than 1 bigger one.

AH​
£​
£/AH​
105​
£369.00​
£3.51​
230​
£719.99​
£3.13​
280​
£819.99​
£2.93​
300​
£929.99​
£3.10​
460​
£1,239.99​
£2.70​
560​
£1,699.00​
£3.03​

Posting in case anyone is interested.
 
Feb 27, 2011
14,841
76,952
UK
Funster No
15,452
MH
Self Build
Exp
Since 2005
I aske this question and was told one 230 would be better than two 105 because of the BMS
Better is a word that can be used in multiple ways.
Better value.
Better current capabilities.

2 batteries in parallel each producing 200Amp to give you 400 amps might be better for your use case than the best value single 230AH producing 200Amps ?
 
Jan 30, 2020
2,956
14,826
Mid Bedfordshire
Funster No
68,408
MH
RS Endeavour
Exp
Just a tad..
My FogStar 280Ah arrived today. I'm also going to use a Victron AC charger with it. I only got a IP22 that charges at 20 amps. When I bought it last year, I was planning to get a far smaller battery. I don't think it matters that much as when I plug in, it'll be for +12 hours at a time anyway. The only issue with having a smaller charger is it takes longer.

FYI, If you do need faster charging you can use multiples of this charger and they form, in effect, one homogeneous charger, which are synchronised together.. I think you can Bluetooth together up to four of these.

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May 8, 2021
1,581
3,029
Bedford, UK
Funster No
81,023
MH
Bailey Autograph792F
Exp
Since June 2021
I got my 300ah too but it's sat in the box and when i asked the other week was told just to put in the van and charge it like that. I wasn't expecting it would be at 50%? So, now do i need to buy a charger before fitting or not?
 
Jun 6, 2012
1,144
1,557
Leeds
Funster No
21,344
MH
A class
Exp
Since 2012
Just checking which batteries were best value and if 2 smaller ones were better than 1 bigger one.

AH​
£​
£/AH​
105​
£369.00​
£3.51​
230​
£719.99​
£3.13​
280​
£819.99​
£2.93​
300​
£929.99​
£3.10​
460​
£1,239.99​
£2.70​
560​
£1,699.00​
£3.03​

Posting in case anyone is interested.
Glad I went with 2x 460ah 👍
 
Jun 29, 2022
43
121
Bishop Auckland, UK
Funster No
89,576
MH
Autocruise
Exp
2009
Did you guys have to make any changes to your Alternator ???
I thought we might have to but in the end there was no issue. There's a slight change in engine note when the b2b's charging but the alternator was fine and didn't get too hot even when the van was ticking over on the drive. The battery's fantastic, over a weekend with lights, pump, diesel heater & 500w inverter running a TV it only dropped 12%. Well chuffed!!
 
Sep 17, 2017
5,591
10,456
Birmingham, UK
Funster No
50,575
MH
A-Class
Exp
2017
It'll be a few weekends before I get around to fitting the FogStar, B2B and AC charger. So I thought I'd quickly wire up the AC charger just to see if everything was ok. 20 amps charge immediately shown in both the Victron and FogStar apps, which was a win. Only issue was the eBay £3 fuse box I slapped in (that came with a 30A fuse) got pretty warm in the space of a few minutes. Clearly wasn't up to the job. So further testing was abandoned. In the van I've got much higher quality kit already fitted and waiting for the upgraded parts.
 

Lenny HB

LIFE MEMBER
Oct 18, 2007
54,013
152,241
On the coast in West Sussex
Funster No
658
MH
Hymer B678 DL
Exp
Since 2008 & many years tugging
Better is a word that can be used in multiple ways.
Better value.
Better current capabilities.

2 batteries in parallel each producing 200Amp to give you 400 amps might be better for your use case than the best value single 230AH producing 200Amps ?
When the new wagon arrives I'm going to have to spend another couple of hundred on 2 x 230 ah for that reason.

Subscribers  do not see these advertisements

 

Lenny HB

LIFE MEMBER
Oct 18, 2007
54,013
152,241
On the coast in West Sussex
Funster No
658
MH
Hymer B678 DL
Exp
Since 2008 & many years tugging
Hi all
My 300ah Fogstar drift has just arrived
Looks a good piece of kit!
It’s at 50% charge so have connected it to my victron main charger.

Does anyone have the same Fogstar setup!
Interest to know if I just use the built in lithium profile or if I would be better using advanced settings to set voltages for absorption And bulk - the manual gives contracting settings (14.4 and 13.8) and on the online help it says 14.4 for both

Thanks

R
Most of the Lithium experts recommend charging to 14.1v they still reach a full charge just takes a bit longer.
Worth looking at some Off-grid Garage videos.
 
Last edited:

Hoovie

Free Member
May 16, 2021
1,249
1,689
Funster No
81,251
MH
Autotrail
Most of the Lithium experts recommend charging to 14.1v the still reach a full charge just takes a bit longer.
Worth looking at some Off-grid Garage videos.
In my Hybrid setup, I have my VSDR Lithium Controller (the interface between the Lithium and the Chargers) set to disconnect the Lithium at 14.1V. I've found at the point the voltage hits this level, the batteries have just hit the 100% charge point, so it is the ideal point as batteries are full and there is no float (which is what the Lithiums like best).
(Chargers then carry on to finish the job with the Lead).
 
Feb 9, 2008
8,961
18,715
Corby, Northants
Funster No
1,455
MH
Coach Built
Exp
Since 2007
In my Hybrid setup, I have my VSDR Lithium Controller (the interface between the Lithium and the Chargers) set to disconnect the Lithium at 14.1V. I've found at the point the voltage hits this level, the batteries have just hit the 100% charge point, so it is the ideal point as batteries are full and there is no float (which is what the Lithiums like best).
(Chargers then carry on to finish the job with the Lead).
Isn't overcharging prevented via the BMS ?
 
Dec 2, 2019
3,633
7,849
Amersham
Funster No
67,145
MH
van conversion
Exp
Since 2019
In my Hybrid setup, I have my VSDR Lithium Controller (the interface between the Lithium and the Chargers) set to disconnect the Lithium at 14.1V. I've found at the point the voltage hits this level, the batteries have just hit the 100% charge point, so it is the ideal point as batteries are full and there is no float (which is what the Lithiums like best).
(Chargers then carry on to finish the job with the Lead).
And when are they going to balance? Is there a time delay on the VSDR to keep them at CV for a little while?
 
Oct 20, 2021
116
97
Framlingham, Woodbridge, Suffolk, UK
Funster No
84,970
MH
Swift Kon-Tiki 774
Exp
Since 2017
Fitted my 300ah Drift. First trip since electrics dropped out, 11.1v showing on Swift controller. Ran engine and all came back up. Contacted Fogstar who came back quickly to say battery needs to be charged on delivery to 14.1 and discharged to 40% 4-5 times before using as in manual. Can’t find that in the manual but currently we’re touring in Spain for a fortnight. Any thoughts welcome…

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