Using state of the art devices and PCB design we've made a reasonably small and lightweight isolation switch capable of switching high current batteries directly. Advantages we think this offers:

- Isolation of all electronics on the ground for safety
- No connection pitting compared with using large switch based isolation solutions
- Minimization of EMC radiation as connectors are plugged in and out
- External electronics can be used to switch the power system on / off
- Auto Off in case of aircraft incident. A pull out cable can switch power off automatically
- Simple very low current toggle switch can be mounted more or less anywhere for easy power isolation

Isolation (switching) normally happens when very low current is drawn, however the switch still needs to pass the full current when ON. This switch will happily pass through the heavy currents required by many large multi-copters and electric aircraft. (70A continuous. Much higher for few seconds bursts).

Some testing at 140A:

We think this is a unique solution on the market today, please do tell us if this is not the case.

Please come to see more details on our site:
Bluelight Technologies

Lights that won't damage your wallet too much and won't take too much battery power either:

1) Bright Blue detail lights (BL-BlueS42)

These wing or rotor arm detail lights will give nice blue detail to airplane wings or multi-copter rotor arms. A good way to improve orientation when flying around the field in fading light. 

Will connect directly to your LiPo balance connector (or the main connector of course), or can be connected with the help of the low cost Turnigy relay switch or the Pico switch radio controlled relay, to give on/off capability.

2) Three molded Headlights. Each lamp at 1.2W / 90 lumens each, so 270 lumens in total, to give good visibility at day-time or night-time. 

Again easy connection direct to the battery, or can use the low cost Turnigy relay switch or the Pico switch radio controlled relay, to give on/off capability.

Note if connecting to the LiPo battery always use the outermost connections (as shown in the picture) so as not to unevenly drain the LiPo cells.

Please do come and see more detail at Bluelight Technologies

I would like to introduce our new BL-NavLV-S : Nav lights / Low Battery detect product (for day-time visibility)

Features are:

- SUPER bright double blink strobe / beacons (blinking as commercial aircraft) and landing lights
- 8 (expandable to 11) Super Bright 100 lumens per LED light average (can double up blinking LEDs)
- Navigation / Strobe / Landing (red, green, and white) 
- Two low battery modes (Pre-set time-out and/or Low Voltage) 
- RC Tx input (2 or 3 way switch supported. Lights on/off, Landing lights can come on coincident with gear down) 
- Servo output to activate parachute (or other electronics) when low battery 
- Small warning LED on controller board: Detect battery low or very low 
- Redundant battery can be connected to the controller (or no need to connect main battery)
- A 5V BEC output in case of LiPo (or other battery) failure or for other lights, such as strip lights
- Set up via on board DIP switches + free PC tool for advanced features and battery health check
- Powered from 5v to 26V (1s to 6s)
- MIL spec protection (MIL STD 883G - Method 3015-7: class 3) on LED outputs - help protect from lightning strikes

Introductory video:

Please come visit our website to check it out in more detail: Bluelight Technologies
(You can also see its sister product, the BL-NavLV-N with smaller Ultra bright LEDs, maybe better for scale / and dusk or night-time flying).