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Comparativa de Baterías – Baterías 18350 al completo

Si la semana pasada os hacia una reseña sobre las diferencias de las baterías 18650, hoy os traigo una comparación de baterías en su tamaño más pequeño, las baterías 18350… Mis preferidas. Nuevamente ha sido un lector de Vaportunidades el que ha aportado esta interesante e instructiva información, muy valiosa para todos los vapeadores.

Si os perdisteis la comparativa de las baterías 18650 la podéis revisar en este enlace.

La información está sacada de una web que se dedica a hacer revisiones de productos relacionados con linternas, entre otras cosas, las baterías.

La web en si se llama lygte-info.dk y en esta ocasión nos muestra varias tablas comparativas de distintos tipos de baterías pequeñas. centrémonos en las 18350 de AW, Efest, Ultrafire y Xtar, entre otras.

Como bien sabéis el “18″ corresponde a los 18 mm de grosor de las baterías y los 3 números a continuación hacen referencia a su longitud: 350 mm, 500 mm o 650 mm.

En las siguientes gráficas podremos ver una extensa comparación de distintas baterías valoradas en: Longitud, diámetro, peso, capacidad de descarga por voltaje, capacidad de descarga por tiempo, energía, corriente y resistencia interna. Muchos datos para los vapeadores más exigentes.

Toda la información al completo la podréis leer en este enlace.

Battery test for small batteries, Summary for all tested batteries
DSC_0409

This test includes batteries that are around 10440/AAA, 16340/CR123, 18350 and 14500/AA size.

Index
Summary for all tested batteries
Common curves for all tested batteries
Common curves for all tested batteries, the low part
Common curves for all tested batteries, the medium part
Common curves for all tested batteries, the high part
Comparator
Individual tests
How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries

Size of batteries

Before a battery can be used, it must fit in the equipment. This is often a problem with protected batteries, because they are longer than the primary battery. Depending on the size of the battery spring in the equipment it might or might not fit.
A 16340/CR123 battery is supposed to be 34 mm long.
A 14500/AA battery is supposed to be 50 mm long.

Length

The protection is always added at the bottom of the battery here is an example for a 18650 battery.

Diameter

There is a sligt variation of the diameter, this is mostly due to the wire going from the plus pole down to the protection circuit and the extra wrapper layer.

Weight

The weight is mostly interesting when there is suspection about the battery being a fake, they will often have another weight.

Capacity

Usual batteries are rated with capacity, i.e. how many mAh (or Ah) they have. This value is not a fixed value, but depends on the testing conditions. In these charts I do the test at different currents.
The capacity does also depend on what voltage is required, some equipment works fine at 2.8 volt, but other need more voltage.

Capacity

The above chart show the capacity down to 2.8 volt, that is my lower test limit.

CapacityTo3.0

CapacityTo3.2

CapacityTo3.4

CapacityTo3.6

Time

This is another way to look at the capacity, how long does it take to empty the battery at different currents.
These charts are with discharge down to 2.8 volt.

TimeHours

The first chart is in hours, this is fine to see the low currents, for higher currents the next chart is better.

Time

In this chart the lower currents does not fit, but it is possible to see runtime at the higher currents.

Energy

Energy includes both current and voltage in the same measurement and is a better indication of what the battery can do.

Energy

Other measurements

Current

Batteries has recommended maximum current drain on the cell. If this specification is missing, it can usual be assumed to be 2xC, i.e. a 600mAh battery will have a maximum current of 1200mA or 1.2 Ampere. These assumed values are not shown in the chart.
Batteries with a PCB protection also has a trip current, this is at a higher value than the specified current. In my opinion 30% up to 50% above the specified current is best.
The “Protection trip” will be missing for unprotected batteries and because my test equipment is configured to starts at 1 ampere batteries with “Protection trip” below 1 ampere will also be missing.

Ri

Internal resistance shows how the battery handles a heavy load for short time (The actual test takes up to 1 minute). Batteries with a low resistance will hold the voltage better than batteries with a high resistance.

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