T100 Black Battery Issues

Sounds like it might be the alarm causing a bigger drain than it should. I’ve heard a lot in the past about Datatool alarms causing lots of problems. The T595s were bad for this with a factory Datatool fitted and most were removed by their owners.
Of course it could just be a weak battery, it’d be worth getting a drop check done on it to check its condition for starters (pardon the pun )

 

Hello and welcome to the forum Clyde,
Iv'e got a Datatool on my Rocket but when it's not being used I always connect it to an Optimate charger.
https://www.thetriumphforum.com/threads/optimate-yes-or-no.14798/

 

Unless you are throwing away batteries that just need a recharge something is definitely wrong. A new battery every year is never right, trickle charge or not. Is it possible to disconnect the alarm temporarily to see if that's it. If not you need someone knowledgeable with a multi meter to check it over.

 

As johnjo says, a battery tender won’t help with this one. There’s obviously a fault somewhere if the battery’s going flat after 2 days

 

Absolutely right! get some kind of battery charger and all will be good again.