Product Weight : 15 grams ( 5’s pack ) X 4 = 160 Grams Battery type : Mini Cell / Coin Battery Battery voltage : 1.5 V Technical Data Sheet Specifications LR44 Calculator Battery Chemical system Zinc / Manganese Dioxide, high drain Nominal Voltage 1,50 V Capacity 105 mAh, Discharge over 8,25 kΩ at 20°C to 0,9 V Internal Resistance Below 20 Ω at 20°C Operating Temperature 0°C – 60°C Self Discharge Less than 10% per year at 20°C Weight ~1,75 Package include: PHILIPS – Mini Cell LR44 ALKALINE ( 5 packs ) * 4 units = 20 UNITS Handling and Packing: Packing done with good amount of care so that you get the item in good condition. it is your responsibility to ensure that the packet received is in non-tampered condition. If the pack is open please refuse to receive the order and return it with same logistics person