The following pictures (click on the images if you want to zoom-in) are showing how to clean
up an old battery (left unused during 4 years) after removing the original electrolyte.
Although this process is somewhat hard to execute (that type of battery is really very heavy),
this process
is quite effective.
As the Acculifting is liquid, it's very easy to mix it with rain water. (about 50ml /liter of water)
1- The original electrolyte has been pumped out of the battery using a small electrical pump.
A thin tranparent tube has been introduced down to the bottom of the battery.
2- The Acculifiting mixed with rain water (50 ml/l) has been poured into the battery.
The picture shows the reaction (the liquid becomes milky)
3- The next picture shows the end of the reaction.
The liquid becomes transparent after the decantation of the sulfate cristal.
(Lead sulfate cristal are heavy so they drop quickly down to the bottom of the battery)
4- The next picture shows a zoom on the battery when the reaction has stopped.
It's like if there was snow inside the battery.
After that, the solution is removed and the battery is toroughly (several times) rinsed using distilled
water or pure rain water.
Finally, the original electrolyte was poured back into the battery which was fully recharged.
The final SOC (State Of Charge) was about 70% which can be considered as a successful
recovery for a 8 years old battery left unused during 4 years.
(SOC was about 40% before)
Normally the battery will sligthly recover more capacity after several charge/discharge cycles.
A heavy treatment 
