used mastervolt chargemaster 24/100-3 (has masterbus connections.)
(this is one model back, there is now a 24/110
current model)
this
charger is a beast, pretty small package for a 100a 24v
charger
120v or 240v 50/60hz
can be used standalone or connected into a masterbus system.
I can program the bulk and float voltages for your
batteries if you don't have a masterbus programmer
these are ~$3000usd new
comes with wall bracket and brand new
battery temp
sensor
$1200usd shipped from canada