My PLB1 was stamped to replace the battery
in January 2022 (when I opened it I learned the battery
itself was labeled with a March 2023 expiration).
I researched replacement options online and found various services from $160 up. I called my preferred (local) dealer who I purchased it from, and he sounded like he didn’t want to be bothered, and told me it’s about the same as the cost to replace, around $330. (So much for buying
local. We’ll have to see who gets my business in the future).
I found replacement batteries
online for $40, but didn’t find installation
instructions. So here they are:
There are 3 screws under the top label. That will allow you to remove the cap assembly that holds the antenna
. Under that are 2 larger screws one on each side that will separate the top section and expose the battery/circuit board.
for more information, it should be self explanatory, if not you should not attempt it on your own.
When reassembling, make sure everything mates properly before tightening screws, and there is nothing interfering with the seal between the caps and body. (There’s a clear rubber gasket
in the recessed edges where the cap mates with the body).
After reassembling, test with a full GPS
PS - for those who wish to pontificate about “how much is your life worth?” or letting the “pros” do this, or voiding the warranty, keep in mind the warranty is long expired before the battery date.
The final full self test is proof of whether you can trust your own work.
This is only my opinion, you must make your own decisions and use your judgment.
If you do send yours in I recommend you send it to an Ocean Signal “authorized” facility and when it comes back you should still perform the full self test with GPS
Disclaimer - if you DIY
you’re on your own, and I am not recommending this. Ocean Signal says this is not user-serviceable. So this post is for information only. Send it to Ocean Signal if you want to be most confident, but I recommend to test the device afterwards, no matter what you decide.