A NiMH replacement Battery pack for the Bip-Pump model ZBP-205 only.
Please make sure you are ordering the correct battery. The Bio-Pump has undergone several design changes since first introduced. Because of this not all batteries are universal.
Pumps with model number ZBP-205 use battery #ZBP-315 (the battery shown on this page)
Pumps with model number ZBP-100 use battery #ZBP-300
Pumps with model number ZBP-200 use battery #ZBP-300
You can also identify the battery by the connection plug on the cable. Please look at the connector in the photo and make sure it matches the battery you have.