Replacing the Rear Cover
To replace the rear cover follow these stepsRemove screws from rear coverGently lift off cover and disconnect the battery cable from the PCB, noting it's location for laterRemove Batteries from rear cover and move cover to one sidePick up new rear cover and replace batteries, noting the correct orientation shown embossed in the plasticConnect the battery cable to the correct PCB location from earlierGently lower lid taking care not to dislodge any connections or trap the battery cableScrew the lid back on using the existing screw
Identify which C12 or C24 model you have
If you are unsure which model of C12 or C24 you have you can tell by inside of the Rear Cover.
C Series Models 2015 and earlier - Include a battery holder and wire, and a pump support that is shorter than the height of the battery holder to accommodate the original IRR-SPV pump
C Series Models 2016 and later - Include a battery holder, and a pump support that is the same height as the battery holder to accommodate the larger IRR-SPV2 pump
L Series Models 2020 and later - Does not feature a battery holder