Аккумуляторная батарея AGM 12/90Ah

 We tested ten batteries of the same size, half of them AGM systems (with absorbed electrolyte). How were the places in the rating distributed, is it permissible to replace a conventional battery with an AGM battery, on which cars is it desirable to use such batteries? More on this below.

“What could be simpler than a primitive null transmitter? Only a primitive zero accumulator. " A. and B. Strugatsky. "Inhabited Island"

What could be simpler than a primitive null transmitter? Only a primitive null accumulator. A. and B. Strugatsky. "Inhabited Island"

Do you want a modern rechargeable battery to appear under the hood of your car, which is not afraid of deep discharges, quietly produces high currents, takes charge well and has excellent foolishness?

Respect to skeptics who understand: such a battery will be twice as expensive as the usual one, and at such a price, all the listed advantages shyly fade away, requiring more careful bookkeeping. This is what we decided to do.

There were five such duets - the Banner, Bosch, Warta, Deka and Mall trademarks. All products were purchased by the editors for cash in regular stores.

AGM batteries are the same lead-acid products that many generations of motorists have become accustomed to, but significantly improved. AGM (Absorbent Glass Mat) is a technology for manufacturing batteries with absorbed electrolyte, which impregnates the micropores of the separator. The free volume of micropores is used for closed recombination of gases; as a result, water does not evaporate. Hydrogen and oxygen leaving the negative and positive plates, respectively, enter the bound medium and re-combine, remaining inside the battery. The internal resistance of such a battery is lower than that of "liquid" batteries, since the conductivity of t Аккумуляторная батарея AGM 12/90Ah he fiberglass separator is better than the traditional "envelopes" made of polyethylene. Therefore, the battery is capable of delivering higher currents. The tightly compressed plate pack prevents the active mass from crumbling, so that the battery can withstand deep cyclic discharges. She can work upside down. And if you break it to smithereens, then there will be no poisonous puddle: the bound electrolyte will remain in the separators.

The advantages of AGM batteries are fully revealed in cars with a start-stop system and with increased energy consumption (Emergency Situations Ministry vehicles, ambulances), etc.

Let's put aside the ammeters with voltmeters for now and look at the labels. The highest declared current, 750 A, was not at all with the AGM battery, but with the usual Deka Gold. The most modest current applications are for ordinary Bosch and Warta: 540 A.

The average weight of AGM batteries is almost one and a half kilos more. The MOLL 8 10 60 model turned out to be the lightest in the AGM camp - it is lighter than the usual “Deck” and “Banner” models!

And this is a clear symptom of the subsequent failure in the tests: something was clearly not put into the battery. The test winner, whom we will name a little later, turned out to be more than two kilograms heavier.

The declared capacity of the participants is from 60 to 63 Ah.

The price of conventional batteries is from 3000 to 4800 rubles. AGM is twice as expensive: from 6300 to 7750 rubles. Deka has the most expensive pair: 4800 and 7750 rubles! And in cheap duets "Bosch" and "Warta" got into. What does not happen in the world!

Now let's move on to electrical measurements. We are interested in reserve capacity, energy at –18 and –29 ° C, and the ability of fully discharged batteries to take charge.

 8C.

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