Item Description
Charge your Syma helicopter with out getting to drain your transmitter batteries or use a laptop in less time. This charger will not work properly 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: 24 in Toys ; Games (See Top 100 in Toys ; Games)
- 1 inToys ; Games Hobbies Radio Control Accessories Battery Chargers
By : Syma
Price : $4.38
Product Capabilities
- 110V Charger for Syma Mini Helicopters
- Can be employed on Syma Helicopters with smaller white Charging Plug
- More quickly Charging with 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 4.2VDC, 350mA (it's about four.6VDC open circuit). There is an LED that lights dark yellow through charge, and green when charge is full and when no battery is connected.
The LED essentially begins to become a lighter yellow when the battery reaches 4.1V, a lighter yellow-green at four.15V, and is green at 4.2V. If you only charge to 4.1V, you will get a great deal more cycles but if you charge to 4.2V, you get a longer flight time - it fundamentally averages out.
For the duration of my testing, this charger only put out its rated output on exceptionally discharged batteries and just for a minute. It is typically only putting out about 250mA immediately after 5 minutes, with the battery at about three.87V. The battery will reach four.1V soon after about 40 minutes. It takes yet another 15 minutes to reach 4.2V, which may very well give you an extra minute flight time.
So you can see why I'm a little dubious about men and women claiming that this charges their battery in 15-20 minutes. If correct, I have to assume their batteries are old and only give a couple of minutes flight time. I frequently get about 7-8 minutes.
Nevertheless, this will charge the battery 20-40 minutes faster than the USB cable charger, and the LED gives a reputable indication of when the battery is filly charged. I am only giving it 3-stars given that the output is weak (which is probably 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 good if the voltage was limited 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 four.2V in about 85 minutes. The USB plug will get started an occasional dim blink at about 3.93V 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. Immediately after about 2 hours, the battery voltage is 4.3V and climbing.
With either the wall plug charger, or the USB cable charger, given that they each have an open circuit voltage of four.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 possibly ultimately safeguard the battery from failure, but is nonetheless not good to charge LiPo batteries more than four.2V. Do not leave the battery on either charger for extended periods.
This charger is fabulous. 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 alot more. Nicely worth it and a wonderful addition to the S107
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