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MEXICOWANDERER's avatar
Apr 12, 2017

Alternative Megawatt Shutoff Timer (link)

Rather than ignore the fact some folks are waiting for a timer, I decided (as usual) to be bullheaded and go looking...

I found a 2-4-6-8 hour selectable timer on eBay that plugs into a wall socket, extension cord, whatever.

The Megawatt charger comes with screw terminals with clear I.D. markings. Think you can handle connecting a three-wire cord pigtail to this? A pigtail has a plug on the other end that plugs into the timer just like any other extension or power lead cord.

Yep, it is 2-4-6-8 hour selectable. Click-click-click. No wind up.

But set the Megawatt to 14.8 volts and try 2 hours. If extra time ends up being needed next time select 4 hours.

Fourteen point eight volts ain't gonna hurt a battery if applied for an hour-and-a-half too long. If you simply cannot bear the thought, back the Megawatt voltage LIMIT down to 14.6 volts or 14.5 volts.

Goop or Silicone the 120 volt Megawatt connection tabs to eliminate the possibility of having your hair accidentally stand on end.

And TEN AWG battery cable connection is fine for 36 amps.

Go for it...

http://www.ebay.com/itm/PRIME-15-Amp-2-Outlet-Mechanical-Residential-Plug-in-Countdown-Function-Timer-/172418611173?hash=item2824f337e5:g:mBsAAOSwXeJYNSZl

Home Depot has 14 or 16 gauge THREE WIRE 120vac pigtails in various lengths, up the yingyang. BLACK = HOT (line) WHITE = NEUTRAL. GREEN = EARTH GROUND. Connections are primary school challenging easy to ID and connect on the Megawatt.

I won't let an "automatic smart charger" cross my threshold...

Go for it....

6 Replies

  • I am talking Chinglish to the guy that has the $299 toroid 5K inverter with 80 amp charger. He is implying that the inverter has two menu modes - one pre-programmed, the other a manual over-ride with vabs max with timer. The language barrier is frustrating. I sent Lin Zhao Peng, in China, an email last night and hope he can unravel the communication knots via email.
  • Knowing the need existed I posted the link. As marked on the Megawatt BLACK wire = L terminal.....WHITE wire = N terminal.....The GREEN wire of course is connected to the TV antenna symbol terminal.

    The Megawatt must see earth ground or touching the metal case bites if feet are bare or a hand contacts metal or earth. Even my Meanwells zot. Twiddle with voltage at the pot when amperage drops. Tweak to taste.
  • Thanks for the link.
    Timer is the last piece I need for your megawatt modification project
  • Yes. Identical. Plug into timer socket then plug timer plug into wall socket. 13.293 seconds elapsed time.
  • My 30 amp MegaWatt came with the pigtail and plug to attach. I tinned the 3 wires first before attaching to power in screws on the far right of the terminal block.
    Is it not still the same?

    This was 3 or 4 years ago?

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