I think that's what they cost.
The range seems to be 30% - 50% of the EPRIB.
These are long lasting LiIon Batteries and even if you find their original source, you will find them very expensive, add to this that need to open and reseal the unit.
Most are designed for a useful battery life of 11 years, but all ask you to replace them after 5 years, to make sure they can always meet the 48hr minimum transmit time at below freezing temperure.
Reality is that after ten years it will most likely still go for way more than 24hrs in a moderate climate. - But then, who wants to take chances on this?
I'll probably get a new unit after 5 or 6 years and keep the old one as spare.
I had this problem 3 years ago when I bought my current boat, the batteries were about 12 years old, and I was quoted a similar high price. So as it was an older 121/243 Mhz type, I had nothing to lose and dug out the old batteries, a bit of a job as they appeared to be fixed in position with some kind of foam. They were Lithium 'D' size batteries which had been soldered together. I found replacements from a company called 'All Batteries', and replaced them for considerably less - under £40 if my memory is correct. If you are interested, PM me and I'll dig out the invoice. People like RS and Farnell can also supply them. I believe All Batteries will also do the soldering and shrink wrap them
Great site. but I couldn't find prices online.
Did you really only pay £40? When I looked at this some time ago, I found that most EPIRBs use the LSH 20 from SAFT and they have typically 4 of them. When I last looked at prices in the states they were around $45 a piece, so $180 for the set.