After a supplier shortage, the iPowerUS IP9V-700 are now back in stock and available for purchase.
The IP9V-700 from iPower is an Ultra High Capacity lithium polymer rechargeable battery intended for professional use. Lithium Polymer batteries use a gel-type electrolyte which has an energy density that is 20% more than typical Lithium Ion batteries and approximately 3 times better than NiCad or NiMh.
These batteries are geared toward the location sound person using professional wireless and will out-perform any rechargeable battery currently available for this use. The IP9V-700's smaller size fits just about any device and it will out-perform a standard 9 volt alkaline battery in high drain applications.