

Premium zinc-air A13 batteries, factory-sealed in a 60-count box. A13 (Size 13, orange-tab) is the standard battery for most behind-the-ear (BTE) wearable audio amplifiers — slightly larger than A10, with longer runtime per battery.
If you're running a BTE wearable audio amplifier, A13 is almost certainly the correct size. Check your amplifier manual or look for "Size 13" or "orange tab" markings. With a 60-pack, most users get 10–12 months of continuous daily use.
After removing the tab, wait 2 minutes before inserting into your amplifier — this lets the zinc-air activation complete. When your amplifier isn't in use overnight, leave the battery door slightly open to preserve battery life. Never attempt to recharge zinc-air batteries.
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