Disassemble norelco T765 - Norelco T765 Beard Trimmer

Yes, a cleaning unit for model 1160X is available at shaveroutlet.com
Philips Norelco 1100 Series Clean and Charge Unit

The correct battery can be found at shaveroutlet.com here:
http://shaveroutlet.com/shaver-replacement-battery-pack-fits-norelco-3605-others-p-277.html
Disassembly video is here:

http://www.youtube.com/watch?v=2oAnLpvdYqQ

Correct batteries for your model can be found at shaveroutlet.com. See link bewlow

http://shaveroutlet.com/shaver-replacement-parts/batteries/philips-norelco/shaver-battery-pack-for-most-norelco-more-p-278.html

Videos for disassembly and installation can be found at links below

http://www.youtube.com/watch?v=rGD84BfKxAE

http://www.youtube.com/watch?v=2oAnLpvdYqQ

You will need to disassemble the heads and brush them out. You can soak the parts in rubbing alcohol if they are gummed up. This will loosen the material up so that it can be brushed away. An old toothbrush works well for this.
To disassemble the heads you will find a tutotial video at shaveroutlet.com. Click on link below and scroll down for video

http://shaveroutlet.com/shaver-replacement-parts/norelco-philips-hq8-spectra-sensotec-replacement-heads-p-251.html

You will find batteries for 3805XL at shaveroutlet.com. See link below

http://shaveroutlet.com/shaver-replacement-parts/shaver-battery-pack-for-most-norelco-more-p-278.html

Scroll down the page for helpful videos for disassembly and battery installation

The lamps may be burned out. Try replacing lamps.

philips norelco HQ9 replacement heads for men electric razor norelco 8160xl blades replacement parts.

You will find a replacement trimmer at shaveroutlet.com. See link below

http://shaveroutlet.com/shaver-replacement-parts/norelco-philips-8100-series-sideburn-trimmer-p-388.html

See disassembly video tutorial at shaveroutlet.com using the link below. You will not have to disassemble as far as the video shows. Just remove the back cover and the trimmer can be 'disjointed' from the cover

http://www.shaveroutlet.com/philips_norelco_shaver_disassembly

Go to the URL listed below for a complete owners manual including 20 diagrams. For more assistance with this trimmer, call toll free: 1-800-243-3050

http://download.p4c.philips.com/files/t/t765_60/t765_60_dfu_aen.pdf

You can not sharpen these blades. To sharpen them, you would have to be able to remove each blade frm the plastic cartridge tht holds them. This type blades are manufactured in such a way that there is no way to take out each of the two individual blades without breaking the part that holds them.