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LiPo 400mah 1S 3.7v 1SQ / 1Si Lipo Battery Pack

LiPo 400mah 1S 3.7v 1SQ / 1Si Lipo Battery Pack

List Price: $18.49
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Price: $12.99
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Perfect lipo upgrade for Heli-Max 1SQ, 1SQ V-Cam, and 1Si series Quadcopter.  Get longer flight times, more power, and more cycles.

  • 400mah capacity
  • 1S 3.7 volts
  • True 100C rating
  • 45mm X 19mm X 7mm
  • 10 grams
  • Lifetime warranty
  • 5C fast charge capable
  • Built today with factory fresh cells
  • Short leads for lower resistance and a better fit

Note: This battery can be charged with stock USB charger. For faster charge times you can upgrade to one of the hobby grade chargers we offer here at MaxAmps.

Note: Polarity on this battery is specific to the Heli-Max 1SQ/1SQ V-Cam/1Si series and can NOT be used on the Traxxas QR-1.

V-Cam users: We have found that this battery will fit better if you loosen the 4 camera mount screws two revolutions.

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8 Product Reviews - Average rating 5 / 5 (Show All)

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Small, powerful

- February 04th 2016

charges quickly, fits into tight spots, and lasts a long time!

10 Stars plus!

- September 24th 2015

I would rate MAXAMPS 10 stars plus. You guys are GREAT. The battery works perfect. Very quick delivery. The packing was so great I thought you had sent me a diamond ring. I want to thank everyone in the company. If there is anything else I need ( dealing ...

big al

- April 02nd 2015

hi all i have the heli-max 1sq
i just got my battery today it says it is a guaranteed fit ? it would not go in intill i filed the battery tray a little on the top and bottom and then it fit very stug but it should be ok it just bends the battery tray bot...


- October 01st 2014

This battery fixed the video freeze issue I was having with the stock battery and it added a couple more minutes to the flight time.

David Brown

- January 17th 2014

This battery works with my 1SQ and does give it a little more life vs the standard battery. Even with the extra weight, the fly time last a little longer. But one big concern, the battery is a little big for the battery cage and bends the bottom of the ...


- January 15th 2014

This is a no brainer. Just buy a set. They fit nice and snug, they work so much better than the stock battery.. Helimax should be ashamed of theirs. At least 10 times as good.
It is a really great product with fast shipping and good communication.

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