Deep Cycle Marine Battery

Best 24 Volt Lithium Marine Battery

Lithium batteries offer many benefits over lead-acid batteries, including weight savings, a much larger number of supported charging/discharging cycles, a low self-discharge rate, faster recharging, and similar.

24-volt lithium batteries are commonly used in marine, automotive and light industrial applications where the weight of the batteries is very important as well as their ability to cycle well.

Published: July 5, 2021.

ampere time 24v 100ah w300px

Lithium vs. Lead-Acid Batteries

When compared with lead-acid batteries, lithium batteries offer many benefits, including:

- lithium batteries support a much larger number of charging/discharging cycles, often 8-10x more than lead-acid batteries,

- lithium batteries are much lighter than lead-acid batteries, often 2-3 times. Also, since lithium batteries don't suffer from the capacity loss due to the high discharge currents (typically 0.5-1C or stronger), actual weight savings are often in the 3-4x range,

- lithium batteries may be recharged faster, often using 0.5-1C currents. Such charging current can ruin deep-cycle lead-acid batteries rather fast,

- lithium batteries are based on the 3.2V Lithium Iron Phosphate (LiFePO4) chemistry cells and during discharge have an output voltage of ~12.8 volts (~25.2 volts for 24V batteries), with most of the time (>90%) having output voltage >12V (for 12V batteries) or >24V (for 24V batteries),

- lithium batteries are energy more efficient than lead-acid batteries,

- lithium batteries don't emit any fumes or gasses during operation,

- lithium batteries may be mounted in any position and are very resistant to vibrations, etc.

However, lithium batteries also have some issues, including:

- their initial price is higher than the price of lead-acid batteries, although this price difference is getting smaller and smaller with the advances in technology and chemistry,

- lithium batteries must have built-in BMS (Battery Management System) to be safe for use - such BMS monitors the battery and prevents unwanted events like overcharge, over-discharge, short circuit, overheating, etc.

- lithium batteries must be recharged using dedicated lithium battery chargers, or with advanced lead-acid battery chargers that feature dedicated lithium battery charging mode or using old lead-acid battery chargers (or car/boat/truck alternator) that don't come with advanced features like automatic desulphation, or automatic deep recovery, and similar.

Note: if unsure, always check the battery documentation or contact the manufacturer.

Of course, both lead-acid and lithium batteries have other pros and cons, but these are the most important ones.

battle born bb5024

12V vs 24V Electric Systems

At first, there isn't much difference between 12V and 24V electric systems, but note that the voltage difference is double - 24V electric systems require half the current in order to deliver the same energy/power like 12V electric systems, leading to thinner wires and decreased energy losses.

This simple fact means that, for example, 12V batteries are used for electric trolling motors up to 50-60 pounds of thrust and 24V batteries are used for electric trolling motors up to 100 pounds of thrust (sometimes even more).

Also, when the 12V power inverter with 80% efficiency features an output power of 1000W, its input is ~1200W, which also means that it draws ~100 Amps from its battery. And 100 Amps current requires some serious cabling in order to keep the energy losses at acceptable levels.

On the other hand, a similar 24V power inverter draws ~50 Amps from its 24V battery in order to sustain 1000W output - and 50 Amps is the current that is much easier to manage than 100 Amps current.

Because of this, 12V electric systems are sometimes replaced on the boats, yachts, RVs and electric vehicles, light industry, etc. by 24V (sometimes even with 36V or 48V) electric systems - they require thinner cables and have lesser energy losses.

24V Lithium Battery: One 24V or Two 12V Batteries in Series

In order to achieve 24V, one has to connect 8 (eight) 3.2V cells in series, achieving a nominal voltage of 25.2 volts.

In practice, this means that one can get one single 24-volt lithium battery or get two 12V lithium batteries and connect them in series.

However, due to the presence of internal BMS, not all 12V lithium batteries are suitable (not safe!) for connecting in series.

The following comparison chart lists some of the most popular 12V lithium batteries with their most important features and specifications.

Note: when connecting two 12V lithium batteries in series, be sure to choose the batteries that support such connections (S: up to 2 or more). Also, use only the very same batteries (model, brand), preferably from the same batch, in order to minimize any potential issue with the batteries.

Model Battery Type
Cell Type
Group Size Capacity (Ah)
RC (min)
Discharge
Currents
Parallel Conn.
Series Conn.
Weight (lbs/kg)
AIMS Power LFP12V50A Deep Cycle
LiFePO4
- 50
120
50A cont.
100A 10s
? 17.75 lbs; 8.04 kg
AIMS Power LFP12V100A Deep Cycle
LiFePO4
31 100
240
100A cont.
200A 10s
? 30.2 lbs; 13.7 kg
AIMS Power LFP12V200A Deep Cycle
LiFePO4
4D (6D) 200
480
160A cont.
350A 10s
? 77 lbs; 34.9 kg
AIMS Power LFP12V50B Deep Cycle
LiFePO4
- 50
120
50A cont.
100A 10s
P: up to 4
S: up to 4
15.5 lbs; 7.0 kg
AIMS Power LFP12V100B Deep Cycle
LiFePO4
31 100
240
100A cont.
200A 10s
P: up to 4
S: up to 4
28.5 lbs; 12.9 kg
AIMS Power LFP12V200B Deep Cycle
LiFePO4
4D (6D) 200
480
200A cont.
400A 10s
P: up to 4
S: up to 4
62 lbs; 28.1 kg
Ampere 12V 50Ah Plus Deep Cycle
LiFePO4
- 50
120
50A cont.
100A 5s
P: no limits (4?)
S: up to 4
14.3 lbs; 6.5 kg
Ampere 12V 200Ah Deep Cycle
LiFePO4
4D (6D)  200
480
100A cont.
280A 5s
P: no limits (4?)
S: up to 4
46.07 lbs; 20.9 kg
Ampere 12V 200Ah Plus Deep Cycle
LiFePO4
4D (6D)  200
480
200A cont.
400A 5s
P: up to 4
S: up to 4
52.25 lbs; 23.67 kg
Ampere 12V 300Ah Plus Deep Cycle
LiFePO4
4D (6D) 300
720
200A cont.
400A 5s
P: no limits (4?)
S: up to 4
69 lbs; 31.3 kg
Battle Born BB5012 Deep Cycle
LiFePO4
- 50
120
60A cont.
100A 30s
P: yes
S: up to 4
17.6 lbs; 8.0 kg
Battle Born BB10012 Deep Cycle
LiFePO4
31 100
240
100A cont.
200A 30s
P: yes
S: up to 4
29 lbs; 13.2 kg
Battle Born BBGC2 Deep Cycle
LiFePO4
GC2 100
240
100A cont.
200A 30s
P: yes
S: up to 4
31 lbs; 14 kg
Bioenno Power BLF-12100WS Deep Cycle
LiFePO4
31 100
240
100A cont.
200A 5s
(not recommended) 28.1 lbs; 12.8 kg
Eastup 1250750 Dual Purpose
LiFePO4
34R/97R 50
120
750 CCA
930 MCA
? 15.43 lbs;  ~7.0 kg
Eastup 12751000 Dual Purpose
LiFePO4
94R 75
180
1000 CCA ? 17 lbs; ~7.7 kg
ExpertPower EP1250 Deep Cycle
LiFePO4
- 50
120
50A cont.
100A 10s
? 13 lbs; 5.9 kg
ExpertPower EP12100 Deep Cycle
LiFePO4
31 100
240
100A cont.
200A 2s
? 22.6 lbs; 10.3 kg
ExpertPower EP12200 Deep Cycle
LiFePO4
4D (6D) 200
480
150A cont.
200A 3s
? 48.3 lbs; 21.9 kg
GLI GLIBATT12050 Deep Cycle
LiFePO4
26 50
120
50A cont.
500A 5s(?)
P: yes
S: up to 4
15 lbs; 6.8 kg
GreenLiFE GL50-50AH Deep Cycle
LiFePO4
21 50
120
50A cont. Yes 15 lbs;  6.8 kg
GreenLiFE GL80-80AH Deep Cycle
LiFePO4
27 80
190
80A cont. Yes 28 lbs; 12.8 kg
GreenLiFE GL100-100AH Deep Cycle
LiFePO4
31 100
240
100 cont.
1000A 5s
Yes 31 lbs;  14 kg
GreenLiFE GL260-260AH Deep Cycle
LiFePO4
8D 260
620
100 cont.
2600A 5s.
Yes 80 lbs; 36.24 kg
JITA 12V100Ah Deep Cycle
LiFePO4
31 100
240
200A cont.
400A 5s
P: up to 4
S: up to 4
23.8 lbs; 10.8 kg
JITA 12V200Ah Deep Cycle
LiFePO4
4D (6D) 200
480
200A cont.
400A 5s
P: up to 4
S: up to 2
48.9 lbs; 22.2 kg
JITA 12V300Ah Deep Cycle
LiFePO4
4D (6D) 300
720
200A cont.
400A 5s
P: up to 4
S: up to 4
68.3 lbs; 31.0 kg
Kunmo LF-12100 Deep Cycle
LiFePO4
75 100
240
100 cont. ? 25.3 lbs; 11.5 kg
Lossigy 12V100Ah Deep Cycle
LiFePO4
- 100
240
50A cont. P: up to 10
S: up to 4
23.8 lbs; 10.8 kg
Lossigy 12V200Ah Deep Cycle
LiFePO4
4D 200
480
100A cont. P: no limit (10?)
S: up to 4
46 lbs; 20.9 kg
Lossigy 12V300Ah Deep Cycle
LiFePO4
4D (6D) 300
720
200A cont. P: up to 10
S: up to 4
72 lbs; 32.6 kg
Mighty Max ML100-12Li Deep Cycle
LiFePO4
30H 100
240
100A cont.
200A 15s
P: Up to 4
S: Not Allowed
29.54 lbs; 13.4 kg
Renogy RNG-BATT-LFP12-50 Deep Cycle
LiFePO4
- 50
120
50A cont. P: Yes
S: Not Allowed
14.77 lbs;  6.7 kg
Renogy RNG-BATT-LFP12-100 Deep Cycle
LiFePO4
- 100
240
100A cont. P: Yes
S: Not Allowed
28.1 lbs;  12.73 kg
Renogy RBT100LFP12S-G1 Deep Cycle
LiFePO4
- 100
240
100A cont. P: Yes
S: Not Allowed
26 lbs; 11.8 kg
Renogy RNG-BATT-LFP12-170 Deep Cycle
LiFePO4
- 170
408
125A cont. P: Yes
S: Not Allowed
46.3 lbs; 20.97 kg
VMAXTANKS LFP27-12100 Deep Cycle
LiFePO4
27 100
240
125A cont.
350A 3s
P: up to 4
S: up to 4
25.3 lbs; 11.5 kg
VMAXTANKS LFPU1-1245 Deep Cycle
LiFePO4
U1 45
108
45A con.
100A 3s
P: up to 4
S: up to 4
10.8 lbs; 4.9 kg
VMAXTANKS VPG12C-50Li Deep Cycle
LiFePO4
U1 50
120
50A cont.
100A 5s
150A 3s
P: Up to 2
S: Not Allowed
12 lbs; 5.5 kg
Waterblade LFP 100-12.8 Deep Cycle
LiFePO4
31 100
240
80A cont.
400A 1s
? 29 lbs; 13.2 kg
Weize FPLI-12100AH Deep Cycle
LiFePO4
31 100
240
50A
100A 3s
P: up to 4
S: up to 2 (4?)
26.4 lbs; 12.0 kg

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers. Also, we have tried to verify every single bit of information in this chart, but things may change over time, especially with the introduction of new battery (sub)models.

12V lithium batteries are a very popular deep cycle battery type, offered by many established and not so known battery brands.

For applications where one must keep the number of connections to the minimum, one may opt for a single 24V lithium battery.

The following comparison chart lists some of the most popular 24V lithium batteries with their most important features and specifications.

Model Battery Type
Cell Type
Group Size Capacity (Ah)
RC (min)
Discharge
Currents
Parallel conn.
Series conn.
Weight (lbs/kg)
Ampere Time 24V 100Ah Deep Cycle
LiFePO4
4D (6D) 100
240
100A cont.
280A 5s
P: up to 4
S: up to 2
47.4 lbs; 21.5 kg
Battle Born BB5024 Deep Cycle
LiFePO4
- 50
120
60A cont.
100A 30s
P: yes
S: up to 2
29 lbs; 13.2 kg
Dakota Lithium 24V50Ah Deep Cycle
LiFePO4
31 52.5
126
52.5A cont.
100A 10s
? 31.9 lbs; 14.5 kg
ExpertPower EP2450 Deep Cycle
LiFePO4
31 50
120
50A cont.
55A 10s
? 31 lbs; 14.1 kg
ExpertPower EP24100 Deep Cycle
LiFePO4
4D (6D) 100
240
95A cont.
150A 3s
? 47.9 lbs; 21.7 kg
GreenLiFE GL24V50 Deep Cycle
LiFePO4
31 50
120
- ? 32 lbs; 14.5 kg
GreenLiFE GL24V60 Deep Cycle
LiFePO4
31 60
144
- ? 32 lbs; 14.5 kg
Fly Power 24V40Ah Deep Cycle
LiFePO4
24 40
96
40A cont.
80A 3-5s
Yes -
Fly Power 24V60Ah Deep Cycle
LiFePO4
31 60
144
60A cont.
120A 3-5s
Yes -
Fly Power 24V80Ah Deep Cycle
LiFePO4
4D (6D) 80
192
80A cont.
160A 3-5s
Yes -
Fly Power 24V100Ah Deep Cycle
LiFePO4
4D (6D) 100
240
100A cont.
200A 3-5s
Yes -
Fly Power 24V120Ah Deep Cycle
LiFePO4
4D (6D) 120
288
120A cont.
240A 3-5s
Yes -
Fly Power 24V160Ah Deep Cycle
LiFePO4
4D (6D) 160
384
160A cont.
320A 3-5s
Yes -
Ionic 24V50Ah Deep Cycle
LiFePO4
31 50
120
50A cont.
170A 3s
P: yes
S: up to 4
27.9 lbs; 12.7 kg
Kepworth 24V200Ah Deep Cycle
LiFePO4
- 200
480
160-200A cont. P:?
S: up to 2
81.4 lbs; 36.9 kg
MoseWorth 24V40Ah Deep Cycle
LiFePO4
24 40
96
- ? 20.9 lbs; 9.5 kg
MoseWorth 24V60Ah Deep Cycle
LiFePO4
31 60
144
- ? 30.8 lbs; 14.0 kg
MoseWorth 24V80Ah Deep Cycle
LiFePO4
4D (6D) 80
192
- ? ?
MoseWorth 24V160Ah Deep Cycle
LiFePO4
4D (6D)  160
384
- ? 77 lbs; 34.9 kg
Scream Power 24V200Ah Deep Cycle
LiFePO4
- 200
480
- ? -
VMAXTANKS LFP27-2455 Deep Cycle
LiFePO4
27 55
132
55A cont.
75A 3s
P: up to 4
S: up to 2
25 lbs; 11.3 kg
Waterblade LFP 50-25.6 Deep Cycle
LiFePO4
- 50
120
80A cont.
200A 3s
P: up to 10
S: up to 8
29 lbs; 13.2 kg

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers. Also, we have tried to verify every single bit of information in this chart, but things may change over time, especially with the introduction of new battery (sub)models.

Some of the 24V lithium batteries also support connecting further in parallel (larger capacity, still 24V) or series (48V or even larger voltages) - just be aware that although the batteries are DC sources, as the voltage is increased, so is the danger of the electric shock (been there, done that! Not very nice thing when happens...)

waterblade 24v50ah


Long Story Short: When looking for a new 24V lithium battery, choose according to your own needs and preferences.

Having a single 24V lithium battery can reduce wiring significantly, but on the other hand, having multiple batteries (12V or 24V) allows the user to achieve the desired voltage and capacity more easily.

And whatever You do, stay safe. Although 12V and 24V lithium batteries are mostly deep cycle batteries, they still pack a rather strong punch!



Amazon Search:

- 12V Lithium Battery

- 24V Lithium Battery

- 36V Lithium Battery

Note: Amazon links open in the new windows, feel free to check them for the most up-to-date offers and prices.

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