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3400mAh High Capacity Replacement Battery for Marshall Kilburn Bluetooth Speaker Complete With 4-Pin Connector This battery provides up to 60% more run time vs original battery pack LITHIUM ION BATTERY PACK 14.8VOLT 3400mAh MADE WITH HIGH QUALITY PANASONIC CELLS Also Great for R/C vehicles, robotics, flashlights, and anything else that requires steady continuous discharge rate. Do not use with power tools or mechanical unregulated box mods. Battery Pack Specification Nominal Voltage 14.8V Nominal, 14.2V Working Capacity (Ah): 3.4 Ah ( 3400 mAh) Charging Voltage (V): 16.8 V Weight (g): 150 g Max. Discharge rate: 2C (6.8A) Pulse current (5-6 sec.): 10A Size 20 mm x 60 mm x 80 mm (approximate) Cautions Li-Ion Batteries may explode if charged or discharged improperly. Protection Module Specifications Over-charge protection voltage 4.325±0.025V Over-discharge protection voltage 2.40V±0.100V Over-current protection 2.2~3.4A Maximal continuous Discharging current 3A Maximal Current consumption 10uA Short circuit protection Automatic Recovery Protection circuitry resistance ≤50m Made in the U.S.A from foreign and domestic components. Please contact us if you need a custom made battery pack that is not listed in stock.