2008 Polaris Ranger RZR Service Manual, Page 298Get this manual
ELECTRICAL 4Add electrolyte to bring level back to upper level mark on case
Battery Removal
12Remove the battery holder strapDisconnect battery negative (-) (black) cable first, followed by the positive (+) (red) cable
NOTE: This is the last time that electrolyte should be addedIf the level becomes low after this point, add only distilled water5Charge battery at 110 of its amphour ratingExamples: 1 10 of amp battery.9 amp; 110 of 14 amp battery1.4 amp; 110 of 18 amp battery1.8 amp (recommended charging rates)Check specific gravity of each cell with hydrometer to assure each has reading of 1.270 or higher
CAUTION