Sinclair FTV battery has anyone made one ? - UK Vintage Radio Repair and Restoration Discussion Forum

lloydwells · 28th Apr 2023, 10:08 am

I've got a very nice working FTV1 that I use around the house with the help of my video sender my one problem being I'm tied to using the mains power supply I have an original battery for it and wondered if anyone had rebuilt a battery using something modern and rechargeable and presumably L-ion

The thickness is the main problem.

60 oldjohn · 28th Apr 2023, 10:55 am

https://www.smallbattery.company.org.uk/sbc_p500.htm

Edit, Sorry I see they are out of stock, if you scroll down to the bottom.

John.

Herald1360 · 28th Apr 2023, 12:47 pm

How thick is the original battery? It may be possible to fit a couple of the thin semiflexible Li-ion rechargeables connected in series with a couple of Si diodes to bring the voltage down to around 6V inside the gutted old battery.

Something like a 303035 perhaps? (30*35*3mm 3.7V 350mAh)

AC/HL · 28th Apr 2023, 5:59 pm

In the unlikely event that you know anyone still using Polaroid cameras, their film battery has plenty of capacity remaining after use. The contacts have a different spacing, but that's not difficult to change.

lloydwells · 28th Apr 2023, 6:23 pm

The Polaroid 600 batteries are long since obsolete this thing is 4MM thick I'm thinking maybe Lithium CR3032s maybe

greg_simons · 28th Apr 2023, 8:44 pm

Have you thought of using thin batteries that power tablet computers, our old friends aliexpress have loads, all 2mm or so thick.
Greg.

Richard_FM · 28th Apr 2023, 10:15 pm

Quote:

Originally Posted by AC/HL

In the unlikely event that you know anyone still using Polaroid cameras, their film battery has plenty of capacity remaining after use. The contacts have a different spacing, but that's not difficult to change.

I've heard about using Polaroid battery packs before, but they only work for a few minutes.

28th Apr 2023, 10:08 am	#1
lloydwells Heptode Join Date: Aug 2016 Location: Dumfries, Scotland, UK. Posts: 557	Sinclair FTV battery has anyone made one ? I've got a very nice working FTV1 that I use around the house with the help of my video sender my one problem being I'm tied to using the mains power supply I have an original battery for it and wondered if anyone had rebuilt a battery using something modern and rechargeable and presumably L-ion The thickness is the main problem.

28th Apr 2023, 10:55 am	#2
60 oldjohn Dekatron Join Date: Dec 2004 Location: East Yorkshire, UK. Posts: 4,117	Re: Sinclair FTV battery has anyone made one ? https://www.smallbattery.company.org.uk/sbc_p500.htm Edit, Sorry I see they are out of stock, if you scroll down to the bottom. John. __________________ My favourite text message "I'll be there in five minutes, if not read again" Last edited by 60 oldjohn; 28th Apr 2023 at 11:00 am. Reason: Added last line.

28th Apr 2023, 12:47 pm	#3
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,555	Re: Sinclair FTV battery has anyone made one ? How thick is the original battery? It may be possible to fit a couple of the thin semiflexible Li-ion rechargeables connected in series with a couple of Si diodes to bring the voltage down to around 6V inside the gutted old battery. Something like a 303035 perhaps? (30353mm 3.7V 350mAh) __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O

28th Apr 2023, 5:59 pm	#4
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,668	Re: Sinclair FTV battery has anyone made one ? In the unlikely event that you know anyone still using Polaroid cameras, their film battery has plenty of capacity remaining after use. The contacts have a different spacing, but that's not difficult to change.

28th Apr 2023, 6:23 pm	#5
lloydwells Heptode Join Date: Aug 2016 Location: Dumfries, Scotland, UK. Posts: 557	Re: Sinclair FTV battery has anyone made one ? The Polaroid 600 batteries are long since obsolete this thing is 4MM thick I'm thinking maybe Lithium CR3032s maybe

28th Apr 2023, 8:44 pm	#6
greg_simons Octode Join Date: Jul 2004 Location: Evesham, Worcestershire, UK. Posts: 1,471	Re: Sinclair FTV battery has anyone made one ? Have you thought of using thin batteries that power tablet computers, our old friends aliexpress have loads, all 2mm or so thick. Greg. __________________ Picture, sound?, DOOR.