HelloCustomer My name isXXXXX to Just Answer.

There is a tool to use to change the battery on the navman, it is very straight forward.

I have given you a link to an e-bay offer, which gives you the replacement battery,

but also the tool to swap them over.

You will see it is easy to follow.

http://cgi.ebay.com.au/BATTERY-Fo-Navman-S30-S50-S70-S80-S90-S90i,1250mAh+TOOL_W0QQitemZ170286845348QQcmdZViewItemQQimsxZ20081213?IMSfp=TL081213122001r26650#ebayphotohosting

I hope this is helpful for you.

Regards

Richard.

HelloCustomer

Ok, I am sorry sir, you will need a torx screwdriver to undo the screws.

( there will be 4 )

also, you will have a connection to connect the power to the satnav. ( white )

I have given you a link to a set of torx,

I wouldnt want to guess the exact size, but it is 5 or 6 mill, for satnavs.

I hope this is useful for you.

Richard.

http://www.maplin.co.uk/Module.aspx?ModuleNo=99691

Hello I am sorry please disregard the last link please and use this link.

Richard.

http://www.maplin.co.uk/Module.aspx?ModuleNo=99691

Hello,

Ok, I cannot explain sir without it being in front of me, I am sorry,

usually the screws are un done from the back, unclip the terminal, switch it over.

If this procedure does not work, then, I have no other explanation for you.

I will have to opt out and let another expert, try explain how.

Regards

Richard.