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Description
Powerbox ESC Backup 5117Powerbox ESC Backup 5117 The back up battery solution for all current brushless speed controllers with integral BEC The ESC Backup enables the user to produce a reliable, redundant receiver power supply using an existing speed controllers BEC power supply and an auxiliary battery. The ESC Backup has two inputs from the speed controller: one for the PWM output, the other for telemetry if present. The signals are passed through 1: 1, while the current
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Powerbox ESC Backup 5117
- The back-up battery solution for all current brushless speed controllers with integral BEC
- The ESC Backup enables the user to produce a reliable, redundant receiver power supply using an existing speed controllers BEC power supply and an auxiliary battery. The ESC Backup has two inputs from the speed controller: one for the PWM output, the other for telemetry - if present.
The signals are passed through 1:1, while the current-bearing conductors are de-coupled from the support battery, which is connected on the underside. The result is that any failure, or even a short-circuit in the speed controllers BEC circuit, has no adverse effect on the receiver power supply. The ESC Backup can handle currents up to 20A, and is supplied ready to install, with all connectors and cables.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 3
Decent driver, but no real torque control
Size: No Size, Style: 4V Screwdriver_Twist 2.0 2pc Set
As others have noted, this driver works well overall, but would be better if the head could go to 90° instead of just 45°, and it comes in an extremely hard to open package. I'd like to point out a couple of other things that I haven't seen mentioned.
First, although this tool claims to have torque control via the three-level setting on the handle, it's not like most drills and drivers. With them, when the maximum torque setting is reached, a clutch disengages and the tool just 'freewheels.' But this Skil driver runs until the motor stalls, and its three settings merely control when that happens. In practical terms, that means the tool can wrench your wrist pretty badly. Even at the lowest setting the torque is considerable, making it all too easy to strip threads or even break off screw heads. This also makes it more likely to injure your wrist.
Also, in case it wasn't obvious, this tool's battery is not user-replaceable. If it runs out of power in the middle of a job... too bad. And when eventually it gets to the point where it will no longer hold a charge, Skil's only suggestion is to "Have the tool serviced by an Authorized SKIL Service Station." If you can find one, that is. If you don't want a disposable tool, this is probably not for you.
Don't get me wrong--I like this driver, and it has already come in handy in a few situations where my regular drill/driver would have been too bulky to fit. But it's good to know its limitations.
Skil also makes a smaller, less expensive 4 V screwdriver that lacks the adjustable-angle head of this one. If a straight power screwdriver is all you need, that one is worth considering:
https://www.amazon.com/Rechargeable-Cordless-Screwdriver-Circuit-Technology/dp/B07C4916LS/ref=sr_1_7
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Reviewed in the United States on May 4, 2026
★★★★★ 5
Easy to use
Size: No Size, Style: 4V Screwdriver_Twist 2.0 2pc Set
A handy tool. Charged fast and is made of quality
Heavy material. Highly recommended for all.
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Reviewed in the United States on April 17, 2026
★★★★★ 5
Trendy shirt and great price
Great shirt and great quality! My son loves it and gets lots of compliments. It’s a soft, nice material and true to size. I’ll be ordering from this seller again.
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Reviewed in the United States on May 29, 2025
★★★★★ 5
Mens shirt
Fit was correct, nice made t shirt
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Reviewed in the United States on January 28, 2026
★★★★★ 4
Nice shirt. Size longer than usual
It's a good shirt, nice quality, a little too long as far as I'm concerned, but the quality is good and it's lightweight. Which is what I like. Like. I don't like heavy shirts that need to be washed and washed to be broken in like this one feels now
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Reviewed in the United States on November 11, 2025