E-Flight 1S Battery Connectors

These are the connectors on E-Flight 1S batteries.

The official name is Molex PicoBlade. It's often referred to as a Pico, UMX connector, or Micro JST.

I use these extension cables and cut them in half to get a pair of male/female connectors with pigtails.


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Small JST and Molex Connectors

Now that I've got my new micro-crimper based on jj604@rcgroup's suggestion, I find that he's got a thread discussing the naming (and mis-naming!) of various small connectors.  There's lots of good stuff there, including pointers to datasheets; here's a snippet.

JST-XH is 2.5mm pin spacing (same as 0.1inch for all practical purposes)
Not micro size but very common. Used in most balance plugs on LiPos and is the "standard" header spacing in many electronic components including PCs. The standard Futaba/JR style servo plugs are this spacing.

JST- ZH is 1.5mm pin spacing
Used in the Spektrum AR 6300 system and a compatible DSM2 Rx from DelTang (DelTangs are available with all 3 connectors).

Molex PicoBlade is 1.25mm pin spacing.
Used in Futaba, FlyDream, Walkera and the new Hobby King Micro (DSM2) 2.4G systems. The HobbyKing 1.7 and 2.2g Servos have this connector. The 2 pin version is used on the PZ bricks as a battery connector.

JST-SH is 1.0mm pin spacing.
Used for servo connection in Spektrum AR6400 "Brick" and the HobbyKing SuperMicro (not DSM2) systems. Most linear servos have this connector.

You should always check the wiring polarity is also correct. Vendors have had a habit of producing connectors with the wiring swapped around.












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Small JST Connectors

Courtesy of RCG user jj604, here's a nice thread that clears up some of the confusion around small JST connectors.  Here's an extract, but lots of interesting details at the link so check it out!

• JST-XH is 2.5mm pin spacing (same as 0.1inch for all practical purposes)
  Not micro size but very common. Used in most balance plugs on LiPos and is the "standard" header spacing in many electronic components including PCs. The standard Futaba/JR style servo plugs are this spacing.
• JST- ZH is 1.5mm pin spacing
  Used in the Spektrum AR 6300 system and a compatible DSM2 Rx from DelTang (DelTangs are available with all 3 connectors).
• Molex PicoBlade is 1.25mm pin spacing.
  Used in Futaba, FlyDream, Walkera and the new Hobby King Micro (DSM2) 2.4G systems. The HobbyKing 1.7 and 2.2g Servos have this connector. The 2 pin version is used on the PZ bricks as a battery connector.
• JST-SH is 1.0mm pin spacing.
  Used for servo connection in Spektrum AR6400 "Brick" and the HobbyKing SuperMicro (not DSM2) systems. Most linear servos have this connector.

JST-DS Walkera 2-Pin Connector

As seen on the Walkera Ladybird (and presumably other Walkera 1S craft).
Vendor is sammylam on ebay. listing here.


Note that some other brand has an identical connector WITH OPPOSITE POLARITY so be very careful in this regard. Here's a nano-tech with opposite polarity.

Update: the polarity of the advertised pigtais looks like it is opposite that of the Walkera Ladybird.

Micro Deans Connectors

Here's the official page.

Polarity Convention:

• + is the male pin on the battery. 
• - is the female pin on the battery.
• + on the speed controller is the female pin (battery side)
• - on the speed controller is the male pin (battery side)

Color Convention:

• Red on batteries
• Black on ESC/charger
• Black plugs harder to get, a lot of people color them with sharpies.

Youtube overview and soldering guide.

Micro JST connector sources.

The first one is connector-only; the others have pigtails of various flavors.
Micro JST 1.25 T-1 2-Pin Connector Plug Female ,Male x 50 Sets
10 x Micro JST 1.25 2-Pin Male , Female Connector plug w/.Wire
Mini. Micro JST Connector plug 1.25 2-Pin w/.Wire x 10 sets
Mini Plug Extention for Micro Battery 10cm (5pcs/bag)