Working fine as described
Akari 4V 0.5Ah Sealed Lead Acid Rechargeable Battery For Mosquito Bat / Toys
The stick is too small
1.2V AA Batteries Rechargeable NI-MH Battery ACCU 1800mAh High Capacity, most suitable for high drain devices Quick Charging, capability, excellent overcharge endurance ISO 9001:2000 Certification Charging Temperature : 0 Degree C - 45 Degree C Discharging Temperature : -20 Degree C - -45 Degree C