410076-0041 Denso Memory Backup Battery Replacement - CR17335SE-DSR

what we have here today is a mangled advanced RF 45 remote sonar sensor this worked very well the only problem is the battery for some reason don't last five years as advertised so you can buy another one online for around $50 which i think is a total ripoff yes so what we are going to do today is see how to open it replace the battery and close it up again so I've already opened this one but just to demonstrate be careful I've used the utility knife like this wind around the edges carefully very carefully and I opened it okay so that will take the lid off okay now before you can do anything the battery is located underneath what you need to do is take a soldering iron and if you have a solder sucker you need to work very carefully first it can you see over there the two little pins you need to solder them melt the solder and use a solder sucker if you don't know how to solve the circui