Gmtlight offers button batteries and all kinds of stacked button batteries. 

Including CR battery, Ag battery, LIR lithium ion battery, LIR lithium ion battery, rechargeable battery, column battery, 1.5V battery, 3V battery, lithium manganese battery, Ni MH battery, lithium battery, rechargeable battery, CR2477 battery, Ag battery, LIR lithium ion battery, alkaline dry battery, rechargeable battery, column battery, cr2450 battery, cr2330 battery, cr2430 battery, 1.5V battery, 3V battery, Lithium manganese battery, Ni MH battery, lithium battery, rechargeable battery, cr2032, cr2025, cr927, cr2016, cr1220, cr1225, cr1216, AG13, Ag3, ag10, AG8, AG9, sr626, sr621, lr932, AG6, LR44, LR1130, lr1120, Lr41, lr754; 23a battery; 27a battery; f622 / 9V battery; ml1220; ml2032; ml2450; ml2025;, lr754 series.