110v Charger for SYMA Mini Helicopters S107 S105 S009 and others
Item Description
Charge your Syma helicopter with out having to drain your transmitter batteries or use a computer system in much less time. This charger will not perform properly on Fake Syma S107 do to the fact 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 : $4.52
Item Characteristics
- 110V Charger for Syma Mini Helicopters
- Can be put to use on Syma Helicopters with little white Charging Plug
- Quicker Charging with much less Battery Drain on Transmitter.
Customer 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 is about four.6VDC open circuit). There is an LED that lights dark yellow during charge, and green when charge is full and when no battery is connected.
The LED truly begins to turn into a lighter yellow when the battery reaches four.1V, a lighter yellow-green at 4.15V, and is green at four.2V. If you only charge to four.1V, you will get alot more cycles but if you charge to four.2V, you get a longer flight time - it generally averages out.
In the course of my testing, this charger only put out its rated output on extremely discharged batteries and just for a minute. It is typically only putting out about 250mA after five minutes, with the battery at about 3.87V. The battery will reach 4.1V following about 40 minutes. It takes another 15 minutes to reach four.2V, which may perhaps give you an extra minute flight time.
So you can see why I'm a tiny dubious about men and women 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 normally get about 7-8 minutes.
Nonetheless, this will charge the battery 20-40 minutes faster than the USB cable charger, and the LED offers a trustworthy indication of when the battery is filly charged. I'm only giving it three-stars because the output is weak (which is most likely great 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 good if the voltage was limited to four.2V to minimize 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 start out 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 3.99V and 45 minutes. The glow will get brighter as the voltage increases. Right after about 2 hours, the battery voltage is 4.3V and climbing.
With either the wall plug charger, or the USB cable charger, since they both have an open circuit voltage of four.6V, I can only assume the battery will maintain growing in voltage till the safety circuit in the battery cuts off the charge. This can ultimately safeguard the battery from failure, but is nonetheless not great to charge LiPo batteries more than 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 even more. Well worth it and a fantastic addition to the S107
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