Batteries for portable operation

Ideas, technical topics, help and discussion for ATV enthusiasts
Forum rules
This forum is run by the BATC (British Amateur Television Club), it is service made freely available to all interested parties, please do not abuse this privilege.

Thank you
Post Reply
g4hiz
Posts: 121
Joined: Thu Oct 18, 2018 6:40 am

Batteries for portable operation

Post by g4hiz » Mon Dec 15, 2025 10:46 am

Hi folks,
thinking of treating myself to a new battery for portable operation, probably 50 to 80Ah, 12V ish and light weight.
What's the flavour of the month these days?

Seasons greetings,
Jen

radiogareth
Posts: 1437
Joined: Wed Jan 06, 2016 9:46 am

Re: Batteries for portable operation

Post by radiogareth » Mon Dec 15, 2025 11:50 am

Hi Jen, Lots of us use Fogstar products in a variety of sizes.
Not heard a bad word so far. I use a 105A/Hr LiFePO4 and its been amazing. Rob MoDTS has a string of 280A/Hr wired for 28V and it was his recommendation that I chose mine as below.
https://www.fogstar.co.uk/collections/l ... rift-105ah which is now £90 less than I paid!
Both Noel G8GTZ and Dave G8GKQ own them too.
I have drawn up to 90A out of mine (not on purpose!) but it holds up incredibly well under high load, usually my 12 to 44V upconverter for driving my big 70cms PA and it sits quite happy delivering 40+A. It powered everything I had on display at the RSGB convention for the two days, using about 45A/Hr of the capacity.
You could also try https://www.bmstechnologies.co.uk/produ ... y-lithium/ if you want something smaller. I have used them for 20+ years as my go-to lead-acid source (cars). They are very helpful on the phone.
Gareth

G8GKQ
Site Admin
Posts: 3023
Joined: Sun Mar 22, 2009 1:21 pm

Re: Batteries for portable operation

Post by G8GKQ » Mon Dec 15, 2025 11:57 am

Hi Jen

I agree with Gareth. The Fogstar 105 AH is excellent and well worth the outlay. It is light to carry, constant voltage and you can monitor its charge state through Bluetooth.

One charge usually lasts me 3 or 4 portable sessions, because I know exactly the state of charge before I go out.

Dave

Post Reply

Return to “General ATV Discussion”