Voltage Issues

[darrsi]

If it is hitting 14.8v when revving then you have no charging issues.
The old battery had just called it a day.

[fazersharp]

My OEM battery is almost 25 years old  :eek 98 plate
I have had the bike for 22 years and since 2012 have had the battery on an optimate type charger when not riding which can be 6-7 weeks at a time. It fires up really strong and I might make numerous stops whilst out but still seems strong.However I fully expect one day to pull the bike out and find that the charger has failed and the battery is flat from which it would not recover.I brought the charger in 2012 when the bike would not start - was old plugs and I flattened the battery trying, I got a Yam branded Ctek charger and it revived the battery after (cant remember but something like24 hours )Always ride with the light mod - left and right on but do not have any other possible electric drains.
There you go that is my experience.   

[Middy2000]

Apols, thought I'd put an update.

New battery fitted and not had an issue since.  I guess the old battery had just had its day.

[unfazed]

After 20 years you could hardly complain.  :lol  I have gone through 3 in 19 years, plus one that died after 6 months and the shop where I bought it replaced it free since it was still under warranty.
The Sealey Current tester is a great little gadget for testing leakage when ignition is switched off. Have one for years and have used it for tracing faults on numerous bikes and cars. See pic,. remove the fuse of the circuit you want to check and put it in the tester. Plug in the tester to the fuse position and switch it on. Has its own little battery.