When should the battery be replaced?

• A. At 50% capacity
• B. When it stops working
• C. Every 3 months
• D. When signs of wear appear

Answer: (A)

Maintaining reliable power means replacing a battery before it becomes unreliable. When capacity drops to around half, the battery has degraded enough that runtime is shorter, voltage under load can sag, and there’s a higher risk of unexpected failure during a drill or mission. Waiting until it stops working leaves you with no margin and can interrupt critical tasks or safety functions. Replacing on a fixed schedule, like every three months, ignores how fast a particular battery wears or how many cycles it has had, leading to unnecessary replacements or missed early degradation. Waiting for obvious signs of wear is risky because issues can be subtle and not immediately visible, yet still undermine performance. So replacing when capacity is about 50% provides a practical balance between keeping devices dependable and avoiding untimely failures.