Maybe interesting - a year ago I bought 2x3 cells here (I know this distributor since the time I've been living in Poland) and reconditioned 2 Portable batteries:
ENERSYS 0800-0004 | Re-battery: acid-lead; 2V; 5Ah; Size: X; AGM; Ø44x73mm; -85÷85°C - This product is available in Transfer Multisort Elektronik. Check out our wide range of products.
www.tme.eu
These are basically identical cells like the original ones. Unfortunately out of stock at the moment.
I'd have to take it apart to show it any better. I just carefully gutted the original battery. The Cylcon battery is essentially the same size as the Portable battery.
On the outside of the Cyclon battery there are some reenforcing ribs (See photos of Cyclon battery pack) that I trimmed off with an Exacto knife until it would fit inside the Portable battery case. The contacts on the Cyclon battery lined up pretty well with the original contacts so I was able to reuse them.
The rebuilt battery worked fine when I last had the Portable fired up 20 years ago. I'm sure the battery and probably the Portable are dead now.
As others mentioned you can also buy the individual Cyclon cells and just rebuild the original battery.
I'd have to take it apart to show it any better. I just carefully gutted the original battery. The Cylcon battery is essentially the same size as the Portable battery.
On the outside of the Cyclon battery there are some reenforcing ribs (See photos of Cyclon battery pack) that I trimmed off with an Exacto knife until it would fit inside the Portable battery case. The contacts on the Cyclon battery lined up pretty well with the original contacts so I was able to reuse them.
The rebuilt battery worked fine when I last had the Portable fired up 20 years ago. I'm sure the battery and probably the Portable are dead now.
As others mentioned you can also buy the individual Cyclon cells and just rebuild the original battery.