The full transcript of his Facebook post:
Here is another of my success stories, I purchased a non running, used Linde H30D Diesel forklift in 2009, when it was delivered the battery was quite flat and would not crank over/start.
As the battery was already 4-5 years old (see pic of date code) I was thinking $180 for a new battery was going to hurt a little...
However, It was placed on SLOW charge overnight with my trusty Desulphator connected, and the next day installed it back in and sure enough, after a fair cranking to get the fuel up she fired up !!!
Anyway, 5 years later the same battery is still in this fork and still going strong...
I put the desulfator and charger on 2-3 times a year for 1 week on "float" charge as this fork doesn't get used much.
Not too shabby for a 10-11 year old battery!!!
DOUBLE YOUR BATTERY LIFESPAN