I can't imagine a battery in the engine bay would remain at below 0 degrees for very long, and if it's just started the car that's probably enough to raise the temperature to a safe level to receive charge from the alternator.
Unless you're in the arctic circle at < -40 deg C. In which case a Li-Ion battery might not be the best choice. Or, indeed, a Caterham.
Aghhh update I fitted a motocell lithium gold to my k series 4 months ago.... advised by shop that 6ah would do it but " no warranty as your putting a motorcycle battery on a car"...what could possibly go wrong? Soooo
4 months 3 accident full discharges & 100kms of an alternator hanging off and dead....
trying a lithiumax 520 cca now warranted for 2 years but $600... will also check alternator when fitting to ensure a1....
I like the "restart technology" on that Antigravity one. Basically, the low-voltage cut-off in the BMS is set rather higher than usual, when there's still enough charge left for one or two starts. It cuts the power then (preventing further drain from immobiliser, headlights left on or whatever) then when you realise, you just have to press a button to bring it back to life - unlike other BMS's which usually require you to connect a charger or boost pack to bring it back to life. A simple idea, obvious in hindsight. Not cheap though, is it?
I like the "restart technology" on that Antigravity one. Basically, the low-voltage cut-off in the BMS is set rather higher than usual, when there's still enough charge left for one or two starts. It cuts the power then (preventing further drain from immobiliser, headlights left on or whatever) then when you realise, you just have to press a button to bring it back to life - unlike other BMS's which usually require you to connect a charger or boost pack to bring it back to life. A simple idea, obvious in hindsight. Not cheap though, is it?
I've been using a Deltran BTL24A480CW for the last two years in a 1700 SuperSprint. Spins the motor right over. Customer service at Deltran was very helpful when I needed them.
For lithium batteries in Sevens in the cold:
https://www.caterhamlotus7.club/comment/2140261#comment-2140261
Jonathan
(There's also some numbers from James on the effects on lithium batteries in EVs.)
Thanks Jonathan that's what I hoped but didn't want to risk it after investing recently in new battery and ECU!
Its a Motocell Lithium Gold (sold locally under that brand but probably available in UK under something else?)
I can't imagine a battery in the engine bay would remain at below 0 degrees for very long, and if it's just started the car that's probably enough to raise the temperature to a safe level to receive charge from the alternator.
Unless you're in the arctic circle at < -40 deg C. In which case a Li-Ion battery might not be the best choice. Or, indeed, a Caterham.
"Motocell Lithium Gold"
Thanks, Tim.
Jonathan
Aghhh update I fitted a motocell lithium gold to my k series 4 months ago.... advised by shop that 6ah would do it but " no warranty as your putting a motorcycle battery on a car"...what could possibly go wrong? Soooo
4 months 3 accident full discharges & 100kms of an alternator hanging off and dead....
trying a lithiumax 520 cca now warranted for 2 years but $600... will also check alternator when fitting to ensure a1....
Experience with a Skyrich HJT12B-FP in another thread.
1.05 kg
Jonathan
From another thread (and another continent):
Antigravity ATX-12-HD-RS.
1.36 kg
16 Ah (Pb equivalent)
Cranking current: 480 A
£312
Jonathan
I like the "restart technology" on that Antigravity one. Basically, the low-voltage cut-off in the BMS is set rather higher than usual, when there's still enough charge left for one or two starts. It cuts the power then (preventing further drain from immobiliser, headlights left on or whatever) then when you realise, you just have to press a button to bring it back to life - unlike other BMS's which usually require you to connect a charger or boost pack to bring it back to life. A simple idea, obvious in hindsight. Not cheap though, is it?
I like the "restart technology" on that Antigravity one. Basically, the low-voltage cut-off in the BMS is set rather higher than usual, when there's still enough charge left for one or two starts. It cuts the power then (preventing further drain from immobiliser, headlights left on or whatever) then when you realise, you just have to press a button to bring it back to life - unlike other BMS's which usually require you to connect a charger or boost pack to bring it back to life. A simple idea, obvious in hindsight. Not cheap though, is it?
I've been using a Deltran BTL24A480CW for the last two years in a 1700 SuperSprint. Spins the motor right over. Customer service at Deltran was very helpful when I needed them.
TexasDreamer, 1992 Caterham Super 7, 1700