Canon BP-522 LITHIUM ACCU

This battery pack, compatible with Canon ZR series Mini DV camcorders, can deliver up to 350 minutes of recording time using the viewfinder, or up to 280 minutes using the LCD viewscreen. (Battery life will vary with camcorder model, usage, temperature, and humidity.) That's more than twice the record time you get from the battery included with your camcorder! And unlike NiCad batteries, lithium ion batteries have no "memory effect" to reduce their capacity.
Models: ZR90, ZR85, ZR80, ZR60, ZR65MC, ZR70MC, ZR40, ZR45MC, ZR50MC, ZR10, ZR20, ZR25MC, ZR30MC,OPTURA Xi, Optura PI, Optura 100mc, OPTURA 200MC, OPTURA 20/10.
The double capacity BP-522 gives you a maximum of 5 hours and 10 minutes using the viewfinder, or 4 1/4 hours using the LCD screen.

Canon BP-522 LITHIUM ACCU, 7.4 V