On Mon, Feb 14, 2011 at 1:41 PM, Tony Firshman <[email protected]> wrote:
> Plastic wrote, on 14/Feb/11 19:38 | Feb14: > > Hi all, >> >> I have a Gold Card which has the discontinued 40LF220 lithium battery. The >> equivalent MGL0025 is also discontinued, and even with the long shelf life >> of these lithium batteries, the new old stock ones are now useless. When >> you >> can find them, they were manufactured in 2002 and cost $30+ - one place >> quoted me $140 for a minimum order of 5, plus shipping. >> >> Is there a ready-made adaptor PCB available that will allow me to use a >> CR2032? >> >> Does the Super Gold Card use the same battery? >> >> If not, I would be happy to design and manufacture a limited run of these >> adaptors to use CR2032s so we can all have our battery backed clocks >> working >> again. I cannot make a guess on price as I have not looked at the cost of >> short-run PCBs recently. >> >> I would be happy to send batches of these to traders in each country at >> cost >> price. >> >> What is the need/demand for something like this? >> >> I am sure that would be popular. I keep getting asked about these > batteries. All my GC/SGC batteries are dead, but (of course) my systems use > the Minerva clock. > > Is the CR2032 man enough though? The CR2032 is 3V 235ma, and on this card would need to be replaced every three years or so, which would be a simple "pop a new one in" operation... The 40LF220 had a lower current capacity but was designed for a long shelf life of ten years, hence the bulk. So yes, the CR2032 truly fits this application. The format is standard for battery backed clocks on PCs, but was quite new in the late 80s. I will look at current costs for getting a batch of 100 of these tiny, single layer PCBs made. Dave _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
