Kastar NP-F970 4-Pack 7.4V 8700mAh Lithium-ion Batteries — Replacement for Sound Devices MixPre-3, MixPre-6, MixPre-10T, Sound Devices 663, FEELWORLD F5 Pro 5.5

High-capacity power: These Kastar NP-F970 lithium-ion batteries deliver extended runtime so your equipment runs longer between charges. Key specifications: Battery Type: Lithium-ion; Battery Voltage: 7.4V; Battery Capacity: 8700mAh. Built-in safety: The cells meet UL1642 & CE safety standards and include a protection circuit guarding against over-charge, over-discharge, over-voltage, over-current, and over-heating. Better value and longevity: With higher capacity and protective circuitry, these replacements help reduce frequent swaps and improve overall cycle life compared to lower-quality options. Package contents: 4-Pack Batteries.