Which 9V battery performs best? Our specialists tested six different saline and alkaline batteries. Based on the price-performance ratio, which one came out on top from those tested?
The graph shows that, as expected, the alkaline batteries performed much better than the saline batteries. In particular is the difference in weight between the various batteries and the fact that the heavier batteries did not always perform better than the lighter ones.
When the voltage of the battery falls below 6V it can no longer be used. Most devices would no longer operate in this scenario. The test results show that the Koltec, Farma Saline and Rutland batteries reached the critical limit of 6V after 36 days. The Lacmé battery still showed 6.54V after 50 days, the Koltec battery still had a “score” of 4.95V, whilst both the Farma Saline and Rutland batteries had 5.45V. The Lacmé battery showed the lowest voltage, namely 3.50V.
The best performers were the Horizont Alkaline and farma Alkaline batteries. After 50 days these batteries maintained an excellent 7.5V and so can still be used. Taking the battery price into account, the Farma Alkaline battery was deemed the winner of the test.
All the batteries were 55 Ah-9V batteries and were tested under a resistance of 200 Ohm over a period of 50 days.
Alkaline batteries are more expensive in comparison to saline batteries, but they are longer lasting. Whereas saline batteries lose voltage over time, alkaline batteries give a constant voltage over their service life. As devices often require at least 6V to operate, much of the energy in saline batteries is lost.
The best price-performance ratio
The Farma Alkaline battery has the best price-performance ratio. This battery is not inferior to the Horizont, but has a more favourable price. The Farma batteries (both alkaline and saline) can be found in our webshop.
* This article previously appeared in Kramp Focus Edition 2 2016
