110v Charger for SYMA Mini Helicopters S107 S105 S009 and others

Product Description

Charge your Syma helicopter with out getting to drain your transmitter batteries or use a personal computer in much less time. This charger will not perform properly on Fake Syma S107 do to the fact they are wired diffrently

110v Charger for SYMA Mini Helicopters S107 S105 S009 and others

Product Details

Shipping Weight: 10.1 ounces (View shipping rates and policies)
ASIN: B004DETSN4
Amazon Best Sellers Rank: 31 in Toys ; Games (See Top 100 in Toys ; Games)
1 inToys ; Games Hobbies Radio Control Accessories Battery Chargers

By : Syma
Price : $4.18

Product Attributes

110V Charger for Syma Mini Helicopters
Can be put to use on Syma Helicopters with modest white Charging Plug
Faster Charging with much less Battery Drain on Transmitter.

Buyer Testimonials

The charger has a fixed plug for North American outlets. The input is rated 100-240VAC, 50-60Hz. The output is rated four.2VDC, 350mA (it's about four.6VDC open circuit). There is an LED that lights dark yellow in the course of charge, and green when charge is full and when no battery is connected.
The LED actually starts to become a lighter yellow when the battery reaches 4.1V, a lighter yellow-green at 4.15V, and is green at four.2V. If you only charge to 4.1V, you will get far more cycles but if you charge to four.2V, you get a longer flight time - it basically averages out.
For the duration of my testing, this charger only put out its rated output on quite discharged batteries and just for a minute. It is normally only putting out about 250mA soon after 5 minutes, with the battery at about 3.87V. The battery will reach 4.1V immediately after about 40 minutes. It takes an additional 15 minutes to reach 4.2V, which can give you an additional minute flight time.
So you can see why I'm a small dubious about people claiming that this charges their battery in 15-20 minutes. If accurate, I have to assume their batteries are old and only give a couple of minutes flight time. I ordinarily get about 7-8 minutes.
Still, this will charge the battery 20-40 minutes more quickly than the USB cable charger, and the LED provides a reputable indication of when the battery is filly charged. I'm only giving it 3-stars mainly because the output is weak (which is quite possibly very good for a single 150mAh battery - I use two in parallel for 300mAh, with a 1.5 hour charge time, and a 15-16 minute flight time), and it would be nice if the voltage was restricted to four.2V to decrease overcharging the battery.
I also measured the USB cable charger. It puts out about 250mA max, and the open circuit voltage is about four.6V. The battery reaches four.1V in about 60 minutes, and 4.2V in about 85 minutes. The USB plug will commence an occasional dim blink at about three.93V and 35 minutes a dim glow/blink at about 3.96V and 40 minutes and a dim glow at about three.99V and 45 minutes. The glow will get brighter as the voltage increases. Right after about two hours, the battery voltage is 4.3V and climbing.
With either the wall plug charger, or the USB cable charger, since they each have an open circuit voltage of 4.6V, I can only assume the battery will preserve escalating in voltage until the safety circuit in the battery cuts off the charge. This may very well ultimately safeguard the battery from failure, but is nonetheless not excellent to charge LiPo batteries more than four.2V. Do not leave the battery on either charger for extended periods.

This charger is terrific. When I charge with the USB it takes about 1hr. This charger cuts it down to about 20-25 minutes. This truely lets you use your helicopter extra. Well worth it and a amazing addition to the S107