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: 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 Description

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

Product Features

• 110V Charger for Syma Mini Helicopters
• Can be utilised on Syma Helicopters with tiny 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 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 total and when no battery is connected.

The LED truly starts to come to be a lighter yellow when the battery reaches four.1V, a lighter yellow-green at 4.15V, and is green at 4.2V. If you only charge to 4.1V, you will get additional cycles but if you charge to four.2V, you get a longer flight time - it fundamentally averages out.

In the course of my testing, this charger only put out its rated output on very discharged batteries and just for a minute. It is usually only putting out about 250mA after five minutes, with the battery at about three.87V. The battery will reach four.1V soon after about 40 minutes. It takes one more 15 minutes to reach 4.2V, which might possibly give you an extra minute flight time.

So you can see why I am a small dubious about individuals 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 generally get about 7-8 minutes.

Nonetheless, this will charge the battery 20-40 minutes more quickly than the USB cable charger, and the LED gives a dependable indication of when the battery is filly charged. I'm only giving it three-stars since the output is weak (which is most likely beneficial 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 reduce 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 4.1V in about 60 minutes, and 4.2V in about 85 minutes. The USB plug will begin 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 both have an open circuit voltage of four.6V, I can only assume the battery will keep growing in voltage until the safety circuit in the battery cuts off the charge. This could ultimately safeguard the battery from failure, but is still not really good to charge LiPo batteries over 4.2V. Do not leave the battery on either charger for extended periods.

This charger is brilliant. 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 more. Nicely worth it and a great addition to the S107