How and where do you put the water into the battery when it says do not open?

If a battery states "do not open," it typically indicates that it's a sealed lead-acid (SLA) or maintenance-free battery, which should not require water refilling. If you believe the battery needs water, it's best to consult the manufacturer’s guidelines or seek professional assistance. Attempting to open a sealed battery can be dangerous and may void warranties. Always prioritize safety and follow proper disposal and recycling procedures for batteries.