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 computer in much less time. This charger will not perform adequately on Fake Syma S107 do to the reality they are wired diffrently
Product Details
- Shipping Weight: 10.1 ounces (View shipping rates and policies)
- ASIN: B004DETSN4
- Amazon Best Sellers Rank: 18 in Toys ; Games (See Top 100 in Toys ; Games)
- 1 inToys ; Games Hobbies Radio Control Accessories Battery Chargers
By : Syma
Price : $4.52
Product Functions
- 110V Charger for Syma Mini Helicopters
- Can be put to use on Syma Helicopters with little white Charging Plug
- More quickly Charging with much less Battery Drain on Transmitter.
Consumer 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 is about four.6VDC open circuit). There is an LED that lights dark yellow in the course of charge, and green when charge is complete and when no battery is connected.
The LED truly starts to grow to be a lighter yellow when the battery reaches four.1V, a lighter yellow-green at four.15V, and is green at four.2V. If you only charge to four.1V, you will get way more cycles but if you charge to 4.2V, you get a longer flight time - it generally averages out.
Through my testing, this charger only put out its rated output on really discharged batteries and just for a minute. It is typically only placing out about 250mA just after five minutes, with the battery at about 3.87V. The battery will reach 4.1V soon after about 40 minutes. It takes a further 15 minutes to reach four.2V, which can give you an additional minute flight time.
So you can see why I'm a tiny dubious about consumers 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 quicker than the USB cable charger, and the LED offers a reliable indication of when the battery is filly charged. I'm only giving it 3-stars since the output is weak (which is likely superior 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 4.6V. The battery reaches four.1V in about 60 minutes, and 4.2V in about 85 minutes. The USB plug will begin 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 3.99V and 45 minutes. The glow will get brighter as the voltage increases. After about 2 hours, the battery voltage is 4.3V and climbing.
With either the wall plug charger, or the USB cable charger, considering that they both have an open circuit voltage of four.6V, I can only assume the battery will preserve increasing in voltage until the safety circuit in the battery cuts off the charge. This may ultimately shield the battery from failure, but is nonetheless not great to charge LiPo batteries over 4.2V. 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 much more. Properly worth it and a superb addition to the S107
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