Performa 630 battery - UK Vintage Radio Repair and Restoration Discussion Forum

Keith956 · 7th Oct 2022, 6:02 pm

Mods please move if this is in the wrong section.

I've an old Mac Performa 630 which works apart from the clock - it still has the original battery from 1994, which has long gone flat.

Alas it's an obsolete type, a Rayovac 840 4.5v, about an inch square that is attached to the motherboard by velcro.

I'm wondering if there is an approximate equivalent - one option is to find (or make) a holder for 3 AA or AAA cells. But there may be some better idea.

Phil__G · 7th Oct 2022, 9:18 pm

https://www.smallbattery.company.org.uk/sbc_840.htm

7th Oct 2022, 6:02 pm	#1
Keith956 Heptode Join Date: Jun 2019 Location: Oxfordshire Posts: 739	Performa 630 battery Mods please move if this is in the wrong section. I've an old Mac Performa 630 which works apart from the clock - it still has the original battery from 1994, which has long gone flat. Alas it's an obsolete type, a Rayovac 840 4.5v, about an inch square that is attached to the motherboard by velcro. I'm wondering if there is an approximate equivalent - one option is to find (or make) a holder for 3 AA or AAA cells. But there may be some better idea.

7th Oct 2022, 9:18 pm	#2
Phil__G Octode Join Date: Mar 2011 Location: North Yorkshire, UK. Posts: 1,118	Re: Performa 630 battery https://www.smallbattery.company.org.uk/sbc_840.htm