Many maintenance free batteries are prone to drop dead suddenly, I have it twice already(local, not the imported ones). AFAIK the one recommended here in the tropics are low maintenance (non-sealed) type batteries.

Yung diesel ko is currently using 3sm motolite enduro, but once it drop dead, I will try low maintenance type, my cars are using it and they are going five years already. They were only refilled once at the motolite center after running about 3yrs.

GS is dead, only fools will buy them now. Actually ang daming palplak na produkto dito sa Pinas lalo na yung mga galing sa 'BANSA NG MGA PIRATA', alam nyo na kung sino yun.