Working fine as described
Akari 4V 0.5Ah Sealed Lead Acid Rechargeable Battery For Mosquito Bat / Toys
The stick is too small
Tuscan Ni-Mh AA Rechargeable Battery 1600mah 1.2V, 1 pack of 2 Pieces (Very High Quality + ISO 9001:2000 Certified) 1.2V AA Batteries Rechargeable NI-MH Battery 1600mAh High Capacity, most suitable for high drain devices Quick Charging, capability, excellent overcharge endurance