What battery do i need for an aspect two maxi key phone

This is a virtually unknown phone. Take into a local repair shop, they can open it up and test the charging port and the battery. They can replace the battery if needed. Or get your work company to change it for a new phone.

https://www.google.com/search?q=MAXI+20+PREMIER

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If you have no power for lights or the ignition, the problem is between the battery and the fuse box. There should be a maxi fuse of 100 amp or more that could be burned.
The headlights are on a different circuit to the key switch but everything runs thru the maxi fuses. You would need to take a test light or meter and trace the power and ground cables from the battery out.

what my registration key number please

ptt needs subscription. afaik, maxis will stop ptt soon.
http://www.maxis.com.my/personal/mobile/vas/ptt/ptt.asp

Typically cordless batteries need to be replaced after 1 or 2 years of use depending on the level of use. I have included a link to a site where you can look up the battery part number by the brand and model number of your phone.
http://www.emtcompany.com/cordless-phone-batteries.html

Steve,

I have a manual for the maxi switch. If you still need an answer I can look it up. Just let me know. Dave