Artisan Power Ascom i75 Phone Replacement Battery. Gray Extended Capacity 2500 mAh Ascom i75 Extended Capacity Replacement Battery (Gray) Fully replaces battery number 660106 Lithium Ion Rechargeable Battery Pack | 3.7 Volt | Cells Made in Japan | 2500 mAh Capacity Rating Long Lasting High Capacity: 2500 mAh capacity rating 47% higher than the OEM battery. Manufactured by Artisan Power, a leader in premium quality replacement battery packs.