Working fine as described
Akari 4V 0.5Ah Sealed Lead Acid Rechargeable Battery For Mosquito Bat / Toys
The stick is too small
APRAMATT All in one universal charger for Camara, Mobile battery with LCD display with Intelligence protection with safety stabilization
Specification
Input - AC100-240V
Output-DC4.2V 300mA
LCD universal charger for all types of Li-ions 3.7V Mobile phone and digital batteries
Constant charging current and voltage keep the battery fully charged and longer using life
Note - LCD display charging, but can't show battery charging percentage