Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to save money on batteries [title] Keep the batteries at room temperature. [step] There is generally no need to refrigerate batteries, as this can cause condensation that leads to corroded contacts (battery ends) and label or seal damage. Temperature extremes, either too hot or too cold, can drain energy from the battery, or cause the batteries to begin leaking.

Ending1: [substeps] To prevent condensation from settling in a battery over time, keep the battery at least 50 percent warmer than it normally would be. The heat will also help disperse moisture evenly around the batteries. Ending2: [title] Soak the batteries in cold water for a longer period. [step] If you're hoping to save a lot of money, you'll need to make sure that the batteries are fully soaked. Ending3: [substeps] Some batteries are designed to withstand high temperatures. Some batteries are made of plastic or wood, and may be hot and wet enough to leak if submerged in water. Ending4: Never attempt to use a battery that shows signs of leaking. [title] Remove drained batteries from use in all products.

Answer format: ending1/ending2/ending3/ending4