PLEASE READ CAREFULLY BEFORE PURCHASING
Big Al's PWM boards are not recommended for beginners. Please DO NOT buy this product if you expect a refund or replacement should the board not work for you after you have soldered it. This board comes in working condition and is fully tested by the manufacturer so please take care and accept responsibility for it should your build not work out.
We have a facebook group should you have problems and would like help identifying if it can be fixed but please have tools available like a multimeter so we can try to help you.
https://www.facebook.com/groups/ModMakingHelp/

We are pleased to stock these amazingly compact boards from Big Al's. This version can be used with 2s to 6s battery configuration.

This board is silent unlike other PWM boards due the the switching frequency. It''s so fast it's silent.


ATTENTION
These boards use a 1K potentiometer, not a 10K like other PWM boards.


Manufacturers Info:
Big Al''s Lipo PWM board is a compact, high power PWM voltage regulator that is designed to fit snugly into a box along side a lipo battery. It can be used with Lipo batteries and regualar 18650s in either a 2s, 3s, 4s, 5s or 6s configuration.The board has an master on/off switch and a built-in 180A P-channel MOSFET.

Big Al's Lipo PWM board uses the same 555 circuit as Big Als PWM Sled board which is different from the standard 555-with-diodes that is used in practically every other board.   Big Al''s Lipo board operates at 25 KHz, which improves the accuracy of external voltmeters, as well as eliminating any "Hum" that is present with other PWM boards.

Big Al's Lipo PWM board requires no external components  other than the battery, the button and the 510 connector.  The pot is mounted directly onto the board, or it can be wired to the board and mounted somewhere else. 

Specs:
Maximum recommended operating current: 60A
P-MOSFET rated current: 180A
PWM frequency: 25 KHz
Standby Current draw: <10 µA
Built in On/Off switch - In the "On" position when the switch is pointing to the left, or closest to the edge of the PCB.
Output Adjustment  Range (approximate)
2 cells - 1.9V to 100% of battery
3 cells - 2.5V to 100% of battery
4 cells - 2.9V to 100% of battery
6 cells - 4.0V to 100% of battery  

Example power output at maximum rated current, different battery configurations:
2 cells  -  440 Watts
3 cells  -  660 Watts
4 cells  -  880 Watts
6 cells  -  1332 Watts  


Please note that there is no current limiting on this board.  Therefore, while it is possible to switch much higher currents than the recommended maximum current, this could seriously heat up the FET and ultimately damage it.
The reason the maximum recommended current is lower than the PFET maximum current is to provide a safety factor and also to prevent heat damage to the board and any wires soldered to it.  

Datasheet: Big Al''s Side Mount 6S PWM Board Spec Sheet

Big Al's Side Mount 6S PWM Board

  • £13.99

  • Ex Tax: £11.66

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Tags: Big, Al's, Silent, LiPo, PWM, Board