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Install 6 Volt Battery Flashlight

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by randlisgiame1986 2021. 2. 28. 03:20

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  1. 6 Volt Motorcycle Battery
  2. How To Install 6 Volt Battery In Flashlight
  3. 6 Volt Car Battery
  4. 6 Volt Lantern Battery
  5. 6 Volt Tractor Battery
  6. 6 Volt Battery For Flashlight

Learn how to convert your vehicle from 6 volts to 12 volts. You, but a 6 or 12 volt battery can pull lots of current if you get in between the positive and negative and the situation are right. Install an alternator with built-in voltage regulator, will discuss both ways. A flashlight is one of the first things we look for when there is a power failure. However, a dead battery makes the flashlight useless, and fumbling around in the dark is not the best way to replace a battery. Flashlights that hold a 6-volt battery are larger than ones you can grip with one hand and they have handles for easy carrying.

Batteries produce the voltage they are designed for, so a 12-volt battery always produces 12 volts. If you’ve got an electrical device that operates on 6 volts, connecting it to a 12-volt battery will break it. However, by inserting another 6-volt device, such as a 6-volt light bulb, in series with your other 6-volt device, you can easily switch your 12-volt battery to 6 volts. Wiring two 6-volt devices in series reduces the voltage from the battery by half so each device gets 6 volts.

Cut one strip of AWG 18 gauge wire using a knife. It only needs to be about 12 inches long. You use this wire to connect between the 12-volt battery and the 6-volt light bulb to switch the power to 6 volts.

Remove ½ inch of plastic off both ends of the wire strip with wire strippers. This reveals the copper metal that connects to the 12-volt battery and the 6-volt light bulb.

Attach one end of the wire strip to one of the terminals on the 6-volt light bulb. Hold the wire in place using a strip of insulating tape. Attach the opposite end of the wire strip onto the positive terminal of the 12-volt battery with the tape. The positive terminal is labeled '+.'

Attach the end of one of the wires from the 6-volt device you want to power using your 12-volt battery to the other terminal on the 6-volt light bulb using tape.

Attach the remaining wire from the 6-volt device you want to power using your 12-volt battery to the negative battery terminal using tape. The negative terminal is labeled '-.' Your 6-volt device and your 6-volt light bulb operate using your 12-volt battery.


by Lewis Loflin

This is an introduction to how to properly connect batteries and cells in series or parallel for greater voltage or current. I'll begin with an explanation of terms, then examples, then experiments. I will only deal here with direct current (DC) devices only. This page has been updated September 2, 2011.

Terms: a cell is an individual electric device. This can be a flashlight cell such as AAA, AA, C, or D cells, or solar cells or even single thermoelectric cell. A battery is a group of two or more cells. They are connected in series positive (+) to negative (-) for greater voltage, or in parallel (+ to + and - to -) for greater current capacity.


Examples of various cells and batteries.

An everyday examples of a battery is the 9-volt transistor battery, which is six 1.5-volt cells in series. The common automobile battery consists of six 2.1-volt lead-acid cells in series. With a battery of these types that are sealed the failure of a single cell ruins the whole battery.

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All batteries consist of individual cells. There are two broad categories of cells:

Primary cells are used once and when discharged are thrown away. Common carbon-zinc and Alkaline are examples of this. There have been attempts to recharge these types of batteries, I wouldn't try this because they could explode or leak.

Secondary cells can be recharged by applying a slightly higher voltage (+ to + and - to - ) to the unit. While a typical auto battery fully charged will read a little over 12.6 volts, the charging system operates at 13-14 volts. Measuring this voltage while the vehicle is idling is a good way to test the charging system.
Examples of these type cells are nickel-cadmium (NiCd), lithium-ion used in many laptop computers, and lead-acid. If these are over charged this can damage the cells and could lead to spewing or explosion. Note that the material in lithium cells is highly reactive to air and water and can cause severe chemical burns. Never attempt to open a lithium cell and if leaking dispose of quickly. Also not nickel and cadmium are both toxic heavy metals dispose of properly.

Power Considerations

The output voltage of any cell be it chemical, photovoltaic, or thermal is dependant on the materials that make up the cell. So a carbon-zinc cell will produce 1.5 volts regardless of size. It can be a AAA or the size of a tanker truck, it's still 1.5 volts. The size does play into current capacity or the amount of current the cell can deliver.

'The more electrolyte and electrode material there is in the cell the greater the capacity of the cell. Thus, a small cell has less capacity than a larger cell, given the same chemistry (e.g., alkaline cells), though they develop the same open-circuit voltage.' (Wiki) This is also known as ampere-hour (Ah) rating.

For example a 6-volt 4.5 Ah battery will produce 4.5-amperes of current for 1 hour or 1 ampere for 4.5 hours. Well, not really. The last few amps often lead to a lower voltage due to increased internal resistance in the cell(s). This is true of either primary or secondary cells. All silicon solar cells produce about .5 volts, but the greater the physical area the greater the current capacity.


A working Example

Pictured above is a 225 watt solar panel made with 60 solar cells producing 30 volts at 7.5 amps. In this case we wired all 60 cells in series (.5 volts X 60) for a panel to be used with a 24-volt charging system. We could have wired the same panel for 15-volts for a 12-volt charging system by connecting two groups of 30 cells wired in series, then connecting the two groups in parallel producing 15 amps of current at 15 volts.

Note that these panels are designed to charge lead-acid batteries or an inverter to feed power to the power line. Power is a product of voltage times current, so one solar cell advertised on Ebay is a 3' x 6' poly crystalline solar cell that produces 3.6A or a total of 1.8 watts at .5 volts.

The cells used in the above panel are 6' x 6' and this 30 volt rating is at no load. Batteries be they solar or chemical always have higher open-circuit voltages than they do when being used. When testing any battery do it under load or with a voltmeter set for checking batteries. (It places a load on the battery internally.)

We must consider current in regards to what size wire we want to use. Higher current require a larger gauge conductor or wire thus more expensive wire. In general we want to limit the length of the wire in very heavy current applications. To produce say 1000 watts from a DC-AC inverter (12VDC to 120VAC) makes more sense to use a 24-volt or 48-volt system to cut down on the wire gauge.


Pictured above are cells in series. They are connected positive to negative and the voltages add while the current or Ampere-hour ratings stay the same. A battery can have any number of cells in series. Cells in series must be the same type and rating. We can connect a lower capacity cell into the string and get the voltages to add, but lower capacity will quickly discharge that cell acting as a high resistance to the other cells dropping the output voltage.

Pictured above are the same cells in parallel. The output voltages stay the same, but the current capacity adds. One can have any number of cells in parallel, but be sure they are the same chemical type and voltage.


Pictured above are the symbols for batteries. The one on the right is my symbol for a solar battery or solar panel which includes internal blocking diode, which often isn't shown. For the following illustrations I will show the various ways to connect both solar and lead acid cells together. I'll assume the solar cells connected with thirty each in series in two separate panels producing 15 volts at 7.5 amps. I'll also assume four 6-volt lead acid batteries with a current rating of 40 Ah.

Note these need to be deep-cycle or marine batteries, not everyday car batteries.


6 Volt Motorcycle Battery

Pictured above is a 24-volt solar charging system. I've wired my two 12-volt solar panels in series and the four 6 volt (actually 6.3) volt 40 Ah batteries in series, connected in parallel with the solar panels. This will produce about 24 volts at 40 amps for a total power of 960 watts for 1 hour from the four batteries. Or one can have 96 watts for 10 hours, etc.
We would use this to power a 24-volt inverter that converts DC to 120 volts AC for powering AC devices. One model rated at 400 watts is designed for powering solid state items such as computers, radios, etc. A compact fluorescent light rated at 20 watts would operate for over 48 hours even if no power was being delivered from the solar panels. In daylight power would come from both the batteries and panels. At the full 400 watts in this example the current would be 16.67 amps to the inverter from the battery bank.


Diode D1 acts as an electrical 'check valve' allowing current to flow in only one direction. This keeps the batteries from discharging through the solar cells when the output voltage drops below the batteries at night. The arrow points to the N-type semiconductor material in the diode and is not the direction for current flow which is from negative to positive. Most websites on solar have this backwards.


In fact this entire arrangement be copied then wired in parallel with each other. So four of these wired in parallel can deliver 160 amps at 24-volts or 3840 watts for one hour. To me this would be a better arrangement because we would use smaller gauge wire to the batteries and smaller blocking diodes saving money. This would also make each individual section more repairable without taking the whole system down.


Pictured above is one method to connect our four 6-volt 40 Ah batteries to two solar panels connected in parallel. The two panels can deliver a peak current of 15 amps. The capacity of the battery bank is now 12-volts at 80 amps. BAT1 and BAT2 are connected in parallel to each other as are BAT3 and BAT4 increasing the current rating to 80 Ah. The two pairs are then connected in series to produce 12 volts at 80 Ah for a total wattage of 960 watts.

Series batteries

PARTS AND MATERIALS

  • Two 6-volt batteries
  • One 9-volt battery

Actually, any size batteries will suffice for this experiment, but itis recommended to have at least two different voltages available tomake it more interesting.

LEARNING OBJECTIVES

  • How to connect batteries to obtain different voltage levels

SCHEMATIC DIAGRAM


ILLUSTRATION

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Install 6 Volt Battery Flashlight

INSTRUCTIONS

Connecting components in series means to connect themin-line with each other, so that there is but a single path forelectrons to flow through them all.
If you connect batteries so thatthe positive of one connects to the negative of the other, you willfind that their respective voltages add. Measure the voltage acrosseach battery individually as they are connected, then measure the totalvoltage across them both, like this:


Try connecting batteries of different sizes in series with eachother, for instance a 6-volt battery with a 9-volt battery. What is thetotal voltage in this case? Try reversing the terminal connections ofjust one of these batteries, so that they are opposing each other likethis:

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How does the total voltage compare in this situation to the previousone with both batteries 'aiding?' Note the polarity of the totalvoltage as indicated by the voltmeter indication and test probeorientation.
Remember, if the meter's digital indication is a positivenumber, the red probe is positive (+) and the black probe negative (-);if the indication is a negative number, the polarity is 'backward'(red=negative, black=positive).
Analog meters simply will not readproperly if reverse-connected, because the needle tries to move thewrong direction (left instead of right). Can you predict what theoverall voltage polarity will be, knowing the polarities of theindividual batteries and their respective strengths?

PARTS AND MATERIALS

  • Four 6-volt batteries
  • 12-volt light bulb, 25 or 50 watt
  • Lamp socket

High-wattage 12-volt lamps may be purchased from recreational vehicle(RV) and boating supply stores. Common sizes are 25 watt and 50 watt.This lamp will be used as a 'heavy' load for your batteries (heavy load = one that draws substantial current).

A regular household (120 volt) lamp socket will work just fine for these low-voltage 'RV' lamps.

LEARNING OBJECTIVES

Install 6 volt battery flashlight light
  • Voltage source regulation
  • Boosting current capacity through parallel connections

How To Install 6 Volt Battery In Flashlight

ILLUSTRATION


INSTRUCTIONS

Begin this experiment by connecting one 6-volt battery to the lamp. Thelamp, designed to operate on 12 volts, should glow dimly when poweredby the 6-volt battery. Use your voltmeter to read voltage across thelamp like this:


The voltmeter should register a voltage lower than the usual voltageof the battery. If you use your voltmeter to read the voltage directlyat the battery terminals, you will measure a low voltage there as well.Why is this? The large current drawn by the high-power lamp causes thevoltage at the battery terminals to 'sag' or 'droop,' due to voltagedropped across resistance internal to the battery.

6 Volt Car Battery

We may overcome this problem by connecting batteries in parallelwith each other, so that each battery only has to supply a fraction ofthe total current demanded by the lamp. Parallel connections involvemaking all the positive (+) battery terminals electrically common toeach other by connection through jumper wires, and all negative (-)terminals common to each other as well. Add one battery at a time inparallel, noting the lamp voltage with the addition of each new,parallel-connected battery:

6 Volt Lantern Battery


There should also be a noticeable difference in light intensity as the voltage 'sag' is improved.

Try measuring the current of one battery and comparing it to thetotal current (light bulb current). Shown here is the easiest way tomeasure single-battery current:

6 Volt Tractor Battery


By breaking the circuit for just one battery, and inserting ourammeter within that break, we intercept the current of that one batteryand are therefore able to measure it. Measuring total current involvesa similar procedure: make a break somewhere in the path that totalcurrent must take, then insert the ammeter within than break:

Note the difference in current between the single-battery and total measurements.

To obtain maximum brightness from the light bulb, a series-parallelconnection is required. Two 6-volt batteries connected series-aidingwill provide 12 volts. Connecting two of these series-connected batterypairs in parallel improves their current-sourcing ability for minimumvoltage sag:


Ref. www.allaboutcircuits.com

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6 Volt Battery For Flashlight

  • Added Nov. 16, 2014