Weight and dimensions for ZR8: 1.2 lbs, 6.5” x 3.25” x 1.15”
Weight and dimensions for ZR5: 0.80 lbs, 4.5” x 4” x 0.75”
ZR5 is 5200 mAh
ZR8 is 8000 mAh
Warning: It is important that you charge your battery regularly and that you maintain at least 25% of your battery power when not in use or left idle. Batteries must only be used with products with an amp-rating equal to or less than the maximum capacity output rating of the battery.