We also have SonicCare toothbrushes on board. Ours were bought last year and are about a year old. We brush in the morning when we get up, and at night when we go to bed
. (Two times a day.) Our brushes
easily stay charged for over a week, and they take very little time to charge back up. I try not to use my engine
hardly at all, so I simply take mine, along with my laptop
to the coffee shop and plug
it in while I surf the net. I rarely even get an odd look. IMHO SonicCare is the way to go.
PS. If you go this route
, be sure to have backup heads on board to swap out. I had hard time finding the heads in Mexico
and eventually had to go to a Wal-Mart in PV in to find one. Ugh.