The LA-365 Replacement Rechargeable Li-ion battery is a replacement or addition to the supplied battery in the M1 microphonemedia interface kit.Features. Easily replaceable in M1 MicrophoneMedia Interface.. 3-year battery life.. Provides 6-8 hrs. of battery usage.Specification. Battery Type - Lithium Ion.. Battery Capacity - 1180 MAH.. Battery Charge Time - 1-2 hrs.. Operating Time - 6-8 hrs.. Item Weight - 1 lbs.