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

Item Description

Charge your Syma helicopter with out getting to drain your transmitter batteries or use a pc in much less time. This charger will not function correctly on Fake Syma S107 do to the truth they are wired diffrently

Product Details

• Shipping Weight: 10.1 ounces (View shipping rates and policies)
• ASIN: B004DETSN4
• Amazon Best Sellers Rank: 14 in Toys ; Games (See Top 100 in Toys ; Games)
• 1 inToys ; Games Hobbies Radio Control Accessories Battery Chargers

By : Syma
Price : $4.82

Item Characteristics

• 110V Charger for Syma Mini Helicopters
• Can be utilised on Syma Helicopters with little white Charging Plug
• More quickly Charging with much less Battery Drain on Transmitter.

Costumer Reviews

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 throughout charge, and green when charge is total and when no battery is connected.

The LED essentially starts to turn into a lighter yellow when the battery reaches four.1V, a lighter yellow-green at four.15V, and is green at 4.2V. If you only charge to 4.1V, you will get much more cycles but if you charge to 4.2V, you get a longer flight time - it essentially averages out.

In the course of my testing, this charger only put out its rated output on really discharged batteries and just for a minute. It is ordinarily only placing out about 250mA following 5 minutes, with the battery at about 3.87V. The battery will reach four.1V right after about 40 minutes. It takes one more 15 minutes to reach four.2V, which may possibly give you an extra minute flight time.

So you can see why I'm a tiny dubious about many people claiming that this charges their battery in 15-20 minutes. If true, I have to assume their batteries are old and only give a couple of minutes flight time. I quite often get about 7-8 minutes.

Nevertheless, this will charge the battery 20-40 minutes more quickly than the USB cable charger, and the LED provides a trustworthy indication of when the battery is filly charged. I am only giving it 3-stars considering the output is weak (which is in all probability good for a single 150mAh battery - I use 2 in parallel for 300mAh, with a 1.five hour charge time, and a 15-16 minute flight time), and it would be nice if the voltage was limited to four.2V to reduce 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 four.2V in about 85 minutes. The USB plug will start 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. Following about two hours, the battery voltage is 4.3V and climbing.

With either the wall plug charger, or the USB cable charger, considering that they each have an open circuit voltage of 4.6V, I can only assume the battery will keep growing in voltage till the safety circuit in the battery cuts off the charge. This may perhaps ultimately safeguard the battery from failure, but is nonetheless not excellent to charge LiPo batteries over four.2V. Do not leave the battery on either charger for extended periods.

This charger is incredible. 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. Nicely worth it and a awesome addition to the S107