Deep-cycle means a different plate, not a bigger number · review
ECTIVE DC80, 12 V 80 Ah AGM, up to 55 % usable review
A 12 V 80 Ah AGM deep-cycle battery rated for up to 700 cycles, and the only battery in this catalogue whose listing publishes a usable capacity figure.
The bottom line The one battery in this entire lot that publishes what it will actually hand back. That single line makes it easier to size a system around than several larger batteries here — and it comes with no dimensions at all, so fit has to be answered elsewhere.
An 80 Ah AGM whose listing does the thing this site keeps asking for.
The usable figure
Up to 55 % of capacity, published as usable. Twenty batteries in this catalogue, and one of them says what fraction of the rating is for everyday use. On a lead-acid battery that fraction is the whole of the sizing calculation, and every other listing leaves it to be inferred from convention.
The cycle count, less well handled
Up to 700 cycles, with no depth and no remaining capacity. The listing publishes the depth-of-discharge concept in one bullet and omits it from the cycle claim in the one above — the two lines do not connect.
What the internal resistance is for
Low internal resistance is named twice, and it is what allows a sustained draw without the voltage collapsing. No current figure is given, so the claim stays qualitative.
What cannot be answered here
No dimensions, no weight, no terminal type. An 80 Ah AGM replacing another 80 Ah AGM will usually fit; anything else needs a measurement the listing does not provide.
Availability
German Amazon store quoted about 128 € when this page was compiled.
American Amazon catalogue carries an entry for it, with nobody selling.
British, French, Italian and Spanish Amazon stores returned nothing at all, so the buy button there runs a search instead of landing on an empty page.
These figures are what Keepa reported on the day this page was last updated. Availability and pricing move without notice.
Prices quoted in this text were read on 16 September 2026. The live price is at the top of the page.
What it gets right, and what it leaves out
Strengths
It publishes a usable capacity — 55 % — which no other battery in this catalogue does
The 700-cycle figure is the highest among the AGM batteries here
Low internal resistance is named, which is what allows a sustained draw
Compromises
The cycle count has neither of its qualifiers, unlike the usable figure above it
No dimensions and no terminals, so it cannot be matched to an existing tray
The second bullet names kettles and hair dryers, which an 80 Ah battery supports only briefly
Specifications
Capacity
80 Ah at 12 V, from the title
Discharge rate
Nowhere in the listing — a low internal resistance is described without a current figure
Construction
AGM, maintenance-free, sealed and vibration-resistant, first and fifth bullets
Depth of discharge
Up to 55 % of capacity described as usable, second bullet — the only usable figure published on any battery in this catalogue
Cycle life
Up to 700 cycles, first bullet; no depth of discharge and no remaining capacity accompany the count
Charging voltage
Nowhere in the listing — a short charging time is claimed without figures
Terminals
Nowhere in the listing
Dimensions
Nowhere in the listing
Amazon reference
B0GC5WDZ17 (same reference on 2 Amazon marketplaces)
EAN
4260725126362
Questions owners ask about this one
Why is 55 % usable the important number?
Because it is what the battery actually gives back. 80 Ah is what the cells hold; 55 % of it is what the maker says can be taken repeatedly without shortening the life. Almost nothing on this shelf publishes that second figure, and it is the one every sizing calculation needs.
Can it really run a kettle?
For a short time, through an inverter, if the inverter and cable permit the current. The second bullet names kettles and hair dryers; at those draws an 80 Ah battery at 55 % usable is measured in minutes rather than hours, which the listing does not say.
100 Ah at 12 V · AGM, sealed · terminal clamps, positive on the right, plus 19.5 mm / minus 17.9 mm · supplied filled and charged · 2-year warranty · 278 × 175 × 190 mm · 21.5 kg
A 12 V 100 Ah sealed AGM leisure battery supplied filled and charged, published with terminal post diameters and polarity, and explicitly stated not to be a starter battery.
Best for: A direct replacement in a caravan tray where the existing clamps must fit the new posts.
140 Ah at 12 V · AGM with glass fibre mats · 850 A (EN) · deep-discharge protection named · positive on the right · dimensions published with a unit error in the listing
A 12 V 140 Ah AGM leisure battery quoted at 850 A to EN, described as gas-tight and suitable for indoor use, with a deep-discharge protection named.
Best for: A motorhome with a mover, where the high current figure is the relevant one.
100 Ah at 12 V · AGM, sealed and maintenance-free · over 600 cycles at 50 % DoD · self-discharge under 3 % a month · −20 °C to +50 °C · M8 terminals · 330 × 172 × 217 mm · 22.5 kg
A 12 V 100 Ah sealed AGM leisure battery rated for over 600 cycles at 50 % depth of discharge, with a published temperature range and a self-discharge figure.
Best for: A garden building or a standby installation where the battery sits for long periods between uses.
