Many people are probably accustomed to seeing 12-volt batteries for cars or motorcycles. They're usually large and require electrolyte refills.
Oddly enough, but today on the power supply market you can find a 12 volt battery that is slightly smaller than an element AA.
12-volt battery characteristics
The basic miniature 12V power source is the 23A and 27A element. They are cylindrical in shape and differ very little from each other.
| Characteristics | A23 | A27 |
| Chemistry | Alkali | Alkaline electrolyte |
| Energy density (mAh) | 40 | 20 |
| Voltage level | 12th century | 12V |
| Appearance | Elongated cylinder | Longitudinal cylinder |
| Height in millimeters | 28.9 mm | 28.2 |
| Diameter, mm | 10.3 | 8 |
| Weight in grams | 8 years | 4.4 g. |
| What's inside or what does it consist of? | 8 LR932 batteries | Eight LR632 batteries |
The table shows that the 27A has more compact dimensions. This advantage allows it to be used in key fobs, flashlights, medical equipment, remote controls, and other devices.
Analogues of 23 A
- A23
- MN21
- V23GA
- L828
- MN27
- L1028
The given analogs differ from each other mainly in diameter.
Devices powered by a 12-volt battery
- Testers.
- Remote controls.
- Devices used in medicine.
- Car add-ons.
How to get 12 volts from batteries yourself?
Let's assume you have a low-voltage battery, say 3-9 V. Then you'll need to use a special step-up converter. You can buy one at a radio store or make one yourself from separate parts.
We recommend the U002V device. It increases voltage from 3 to 12 V.
It can be done serial connection 1.5 volt batteries. You will need 8 of these. You can take types AA, AAAor tablet. Or 3-volt flat type CR2032, CR2016 or CR2025in the amount of 4 pieces. Or energy sources 2CR5, 4LR61 – 2 pieces.
As a result, a serious 12v energy reservoir can be made from simple batteries.
Major manufacturers of 12 volt batteries
To ensure long-lasting operation of the installation, it is worth purchasing individual components from well-known brands.
VARTA – has a high energy density. A battery like the Power One P23GA has a capacity of 0.05 amps per hour. This 12-volt battery is expensive, but it's worth it. Modern materials and advanced manufacturing allow the battery to last quite a long time.
Space – the quality is on par with imported products. Batteries from this company feature voltage smoothing parameters, allowing for extended use.
PAnasonic – have high capacity, current, and good performance. Allows you to power devices that consume a lot of energy.
GP – 12-volt batteries produced by this company are reasonably priced. Despite the low cost, performance is excellent. They function reliably under heavy loads and maintain voltage. Energy is lost slowly.
Energizer – a global battery manufacturer. They serve reliably and for a long time.
Camelion The quality of this company's twelve-volt batteries is high. The price is also reasonable. They can be safely used in devices with high power consumption.
Duracell – A widely advertised company that creates 12-volt batteries with a long service life. If stored properly, they will continue to function properly even after five years.
