The ARB-L18-3000P Fenix rechargeable Li-ion battery provides a high current output of up to 14 amps, plus a sustained 10 amp output. This capacity is required to support extended runtimes in flashlights. Safeguards are in place to protect from overheating, such as pressure relief, microporous, and PTC cathodal block technology. The pressure relief component expels any gas generated, which eliminates any potential secondary threats. Note: This item is priced and packaged as one battery . Shipping Note: Lithium ion batteries are considered "dangerous goods" per US transportation regulations and can often only be transported via ground shipment. Orders containing loose batteries will typically take much longer than predicted to be delivered. Delivery times of 14+ days are not uncommon.