Keeler Standard Lithium-Ion Battery for Wireless Binocular Indirect Ophthalmoscope. Fits All Pupil II & Vantage (plus) BIO's with the larger (Not Slimline
) battery types. Accordingly, this replacment lithium battery fits Keeler Standard Wireless Charger/Docking Station
. The Keeler factory part number for this replacement battery is 1919-P-1013. Lasts up to 11 hours.