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Marine Batteries

Marine Batteries

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Heavy Duty Lithium Battery 12 V / 110 Ah
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NEW
Heavy Duty Lithium Battery 12 V / 110 Ah
1899.95 EUR only €1,915.92
No rating yet
Lithium Battery 12 V / 100 Ah
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NEW
Lithium Battery 12 V / 100 Ah
999.95 EUR only €1,008.35
No rating yet
Professional Deep Cycle AGM Batteries
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VARTA Professional Deep Cycle AGM Batteries
179.95 EUR from €181.46
(15)
Marine Batteries
Product image of VETUS Marine Batteries
-23%
VETUS Marine Batteries
89.95 EUR €118.00 from €90.71
(30)
AGM Batteries
Product image of MASTERVOLT AGM Batteries
-8%
MASTERVOLT AGM Batteries
184.95 EUR €202.78 from €186.50
(4)
Gel Batteries
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EXIDE Gel Batteries
279.95 EUR from €282.30
(1)
PLB40 Portable Lithium Battery / 40 Ah
Product image of DOMETIC PLB40 Portable Lithium Battery / 40 Ah
NEW
DOMETIC PLB40 Portable Lithium Battery / 40 Ah
699.95 EUR only €705.83
No rating yet
Universal Anti-Slip Mat with Strap
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Universal Anti-Slip Mat with Strap
24.95 EUR only €25.16
(1)
Battery Box / black
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Battery Box / black
69.95 EUR only €70.54
(7)
Battery Boxes
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Battery Boxes
13.95 EUR from €14.07
(54)
Battery Boxes
Product image of CAN PLASTIC Battery Boxes
CAN PLASTIC Battery Boxes
99.95 EUR from €100.79
(1)
Battery Boxes
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VETUS Battery Boxes
39.95 EUR only €40.28
No rating yet
Battery Terminal with Connectors / M8 / M6
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Battery Terminal with Connectors / M8 / M6
10.95 EUR only €11.04
(41)
Battery Terminal with Distributor / M10
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Battery Terminal with Distributor / M10
16.95 EUR only €17.09
(18)
SC4 Battery-Pole Clamps
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SC4 Battery-Pole Clamps
31.95 EUR only €32.22
(26)
Battery Terminals / Standard
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Battery Terminals / Standard
8.95 EUR only €9.03
(15)
Power Battery Terminals
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-8%
Power Battery Terminals
19.95 EUR €21.92 only €20.12
(16)
Digital Battery Tester / 12 V
Product image of STERLING Digital Battery Tester / 12 V
STERLING Digital Battery Tester / 12 V
69.90 EUR only €70.49
No rating yet
Battery tester
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NOVITEC Battery tester
69.95 EUR only €70.54
(17)
Li Button Cell / LR 44
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Li Button Cell / LR 44
1.80 EUR only €1.81
No rating yet
Li Button Cell / LR 43
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-36%
Li Button Cell / LR 43
1.00 EUR €1.59 only €1.01
No rating yet
Battery 9V block / 6LR 61
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Battery 9V block / 6LR 61
2.50 EUR only €2.52
No rating yet
Battery MONO / LR20 / D / Set of 4
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Battery MONO / LR20 / D / Set of 4
5.95 EUR only €6.00
No rating yet
Battery BABY / LR 14 / Set of 4
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Battery BABY / LR 14 / Set of 4
4.95 EUR only €4.99
(4)
Battery MIGNON / LR6 / AA / Set of 4
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Battery MIGNON / LR6 / AA / Set of 4
1.95 EUR only €1.97
No rating yet
Battery MICRO / LR 3 / Set of 4
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Battery MICRO / LR 3 / Set of 4
1.95 EUR only €1.97
(1)
Rechargeable battery Type 18650 / 2600 mAh
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Rechargeable battery Type 18650 / 2600 mAh
15.95 EUR only €16.08
(1)
PANASONIC - Li-Batteries 3 V / 1400 mA / 6 pcs
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PANASONIC - Li-Batteries 3 V / 1400 mA / 6 pcs
14.95 EUR only €15.08
(1)
Battery LADY / LR 1
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Battery LADY / LR 1
1.50 EUR only €1.51
No rating yet
EBL Replacement Type C Battery / R14 / 5000 mAh
Product image of EBL Replacement Type C Battery / R14 / 5000 mAh
-14%
EBL Replacement Type C Battery / R14 / 5000 mAh
21.95 EUR €25.87 only €22.13
(1)
Replacement Battery 2500 mAh
Product image of MARINCO Replacement Battery 2500 mAh
-9%
MARINCO Replacement Battery 2500 mAh
29.95 EUR €33.13 only €30.20
No rating yet
Battery Tester
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Battery Tester
6.50 EUR only €6.55
(1)
Battery Balancer
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NEW
VICTRON Battery Balancer
69.95 EUR only €70.54
No rating yet

Marine Batteries


A battery's lifespan
A very common question we are asked is how long a battery will last and what is the maximum life span that can be expected. The life of a battery is substantially defined by the number of charging and discharging cycles. A cycle is defined as the following: Discharging a battery to 20% capacity and then recharging it back to a 100%. If the battery is only discharged to 50% and then fully recharged, it is half a cycle. Depending on their design and construction, the on-board batteries have a certain number of cycles and thus an appropriate life expectancy. 
 
car battery is designed to last about 50-80 cycles.
This sounds very little, but in practice it is more than enough. While a very high current is required to start your engine, the start-up only takes a very short time - resulting in only 0.0001 cycles. This means that the engine can be started between 50,000 and 80,000 times. The life expectancy of AGM and gel batteries is estimated at about 300-700 cycles. That means, if the battery is only 50% while dis- and recharging, the result are 800 to 1000 cycles. While dis- and recharging at 25%, the result are 1,600 to 2000 cycles. Therefore, when used in normal on-board operations, batteries can have a life span of around 7 years. After reaching the stated number of cycles, 80% of the battery's capacity remains. At this point, battery manufacturers consider the battery as used and to be replaced, but this does not mean that you have to replace it. Let's compare it to a diesel tank: your tank is in new condition and has a capacity of 100 liters; after about 7 years, the tank has "shrunk" and only takes 80 liters.

Questions about the warranty come up regularly in connection with the life span of a battery. If a vendor promises a warranty of 3-5 years, this is simply untrustworthy. If the battery ran through a complete charge cycle of about 400-500 charges in the first year due to intensive use, it is basically used up and has done its job. That's like buying a new car and driving over 100,000 km in the first year and then complaining that the tires are worn down.

Care and maintenance of batteries.
Each battery, regardless if it is a lead-acid, AGM or gel battery gets damaged when it is completely discharged and not recharged immediately. In addition, a significant shortening of life expectancy occurs. If possible, don't discharge your batteries completely, a remaining capacity of approximately 20% should always be maintained. In case of total discharge, please ensure immediate recharging of the battery.
AGM and gel batteries do not require any maintenance. However, the connections should be periodically checked and the batteries must be fully charged. All batteries have a certain amount of self-discharge. This amount is so small for AGM and gel batteries that they will even survive a winter break without being connected to a charging device (e.g. Marine battery charger). AGM and gel batteries cannot freeze in winter storage and thus do not need to be removed from your boat in winter.

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