What will be the lightest and best way to step down to 12 v from my 48 v e-bike battery?
1739206
How many amps? One of the best way is use step down transformer or mofset transistor . I have to know how many amps u r dealing with and what frequency or if u tuning motor . All depends.
1739207
A current limiting resistor wired in series with a momentary switch.. Ask your bike store for the parts..
1739208
you can get a buck converter out of china for a few dollars that will be lighter than the resistor required and use 1/4 the power
1739209
I believe Solar Converters out of Canada makes a efficient buck-boost converter. Its small and light. The resistor idea isnt very efficient and will increase current draw but it is cheap but since its on for a sec it may not matter.
113827
I used Energizer A23 Battery (12 Volt), as recommended, one battery will lase longer to six months.
342763
Just pick up 12 volts. Batteries are in series so just configure enough to get 12 volts and you're good to go.
1324699
Yes, as you know your bike has a toggle switch that let's you select which battery to run on... But this battery is much lighter and lasts longer than your original... I decided it was best to buy two... That way when the first one runs out of power I can flip the switch and know I have enough of a charge to get home.
390998
find any 12 volt source via; cigarette lighter,stereo,etc.. just find a hot 12 volt source and a ground. you can put a toggle switch on the lights for easy on/off access. Plus you don't want to kill your battery by accidentally leaving them on so if you run them directly to the battery make sure you have a on/off switch. cheap about $2.00
1027101
You can also get a SLA battery and plug it into the 12v input jack on the back. A 12v 7ah should give plenty of runtime. That's really the only way to go for outdoor use, in my opinion. I've powered all my portables this way for years. D cells get expensive fast and rechargeable D's don't last long in powerful systems. (as little as 2 or 3 hours in one of mine)
2215103
I bought a 12 volt battery for an atv/motorcycle. I bought two small alligator clips( red and black) and attached them to the ends of the wire. Then just clip red to + terminal and black to - terminal. I don't submerge mine in the water so I had to adapt an intake hose. You'll need to suck on the output hose until the water gets through the pump. You'll need a small 12 volt charger for your battery. Not expensive, think mine was about $17. Hooking it up to computer power supply is probably not the best idea.
1848474
If its the only thing you are running a 12v vexilar battery is all you need
2070266
for sure. or you can use a controller that changes it back to 12 volt. controller is key either way
565616
Kendrick has it spot on. Six - 6v batteries at 225 Ah should work with a 1kw for a 12v battery bank.
17574
Hello Melissa - no you can't use a regular 12V battery. If your hub is like mine it is a 36V motor which means you have to connect 3 smaller 12V batteries (like they use in e-bikes) in series to get the 30V required. Then you have to be sure the amp/hours or Ah are low enough to not "fry" your motor controller. You might be able to get good local advice from an e-bike repair person.
197133
That is correct, 12v is required. You will also need space for the battery fairly close to the motor mount. Original leads from the motor are about 4'
118015
48V 20AH LiFePo4 Electric Bicycle Battery Pack Scooter E-Bike Lithium Battery
1086115
You use the Positive post of the first battery and the Negative Post of the last battery. The four 12 volt batteries are treated as though they are a single battery of 48 volts. Keep in mind that you will NOT be connecting to any of the jumpers between batteries.
1736597
Go with two high current 12 volt deep cycle batteries. Wire them in paralell; not series. You only want 12 volts; not 24. Use the same brand/capacity and type. Don't mix brands or current ratings. THE HIGHER THE CURRENT RATING;THE MORE TIME YOU'LL GET ON THE BATTERIES. I've seen systems with more than two batteries however, you'll need additional equipment to pull it off safely. You could also use a marine A/B Battery transfer switch and draw from bat A bat B BOTH of OFF. Don't forget to use fuses at key points. Amazon also has some pretty good books on the subject.
1572692
You don't actually need a constant 12V. The Gentex memory is non-volatile, so it doesn't get wiped when the power is cut. A switched 12V (like you already have w/factory mirror) will work.
641934
It was pretty easy....take a wire from the positive side of battery #1 and a wire from the negative side of battery #6 and connect them to the 36v input wires. I think they are the black and yellow wires on the voltage reducer. It's marked on the bottom and I believe its marked 36v. Then you connect any 12v device to the other two wires, which I believe is the black and red. Again, the input and output are marked on the bottom of the voltage reducer. Works great and only takes minutes to install. Good luck.