Topcon BT-74Q Rechargeable Battery For RL-SV1S & RL-SV2S slope lasers

Topcon's BT-74Q Ni-MH rechargeable battery for Topcon's RL-SV1S single slope laser & RL-SV2S dual slope laser. 

• 7,000 mAH capacity
• The Topcon BT-74Q battery for lasers lasts up to 65 hours on a single charge