Working fine as described
Akari 4V 0.5Ah Sealed Lead Acid Rechargeable Battery For Mosquito Bat / Toys
The stick is too small
"Plug in the charging cable and use compact and portable USB-based power adapter to charge your USB-based digital gadgets in no time. FINGERS PA-DualUSB (with Micro USB Cable) Power Adapter is engineered to be a brilliant channel of power. Built with superior quality delivering 5 V, 2.4 A max. output power and equipped with safety protection layers against over-current, over-voltage, short-circuit and over-heating - it ensures adaptive and efficient charging. Elegantly designed with matte-shine finish, it fits easily into your bags, taking up little room."