12VNominal voltage
100AhAmp-hours at C20
800ACold cranking current (EN)
In short: Battery Exide ET650 at a glance: 100Ah 12V 800A, intended for boats and motorhomes. Size and polarity decide most swaps, and both are listed on this page.
Practical advice for boats and motorhomes
Rough passages give boat batteries a beating that a car battery never sees. Keep the engine battery and the domestic bank separate, linked by a splitter or a DC-DC charger. A battery that will not hold the fridge through one night needs replacing.
Specifications table
How lead-acid batteries work and how to look after them
Charging turns lead sulphate back into active material. Flooded batteries handle hot engine bays well. Keep a flooded battery upright and the vent path clear.
Other options with identical dimensions
Other references from our catalogue with the same measurements and terminal position.
Exide EZ850Tudor TZ850Exide EV1250SExide EP800Exide EQ800
Questions buyers ask about the Exide ET650
What are the voltage and capacity of this model?
It is a 12V battery with a capacity of 100Ah. In banks of several units, connect only identical batteries bought at the same time.
How are the terminals arranged?
The layout is positive on the right-hand side. Check the original before ordering, because the same case size is often sold in both orientations.
Is the Exide ET650 AGM, EFB, gel or lead-acid?
Most smart chargers offer a lead-acid mode. Select it before charging to protect the battery.
Why choose the Exide ET650
Caravan owners often look up the Exide ET650 during spring preparations. Leisure batteries are judged on capacity and recovery more than on cranking. Sailors and caravanners often shop for batteries online in the quiet months.
Expect everyday performance from 100Ah in boats and motorhomes.
See also
Prefer to compare first? The links below lead to other options for boats and motorhomes on baterias.online. Keep the radio code handy before disconnecting the old battery.
Before you order: a quick checklist
- ✓ Capacity 100Ah: equal to or a little above your old label is ideal.
- ✓ Diesels and big engines need the full 800A or more.
- ✓ As a lead-acid battery it needs matching charge settings in the alternator, charger or solar regulator.
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