Automotive, marine, solar and industrial batteries are commonly lead-acid and lithium batteries ranging from just few Ah to 500 or even more Ah.
These batteries are optimized for various purposes and when looking for an equivalent battery (or batteries), be sure to check size battery type, its chemistry, dimensions, capacity, max. drain current, max. pulse current, charging current and/or voltage, shelf life, self-discharge rate etc.
While lead-acid batteries (flooded, gel cell, AGM) are norm for industrial batteries, lithium batteries are offering many improvements, especially regarding weight and number of charging/discharging cycles.
With the improvements in electronics and chemistry, lithium batteries with Battery Management System (BMS) are more and more often used as drop-in replacement even for high-end AGM batteries.
But, price, reliability and simplicity of the lead-acid (especially AGM) batteries warranty their use long in the future.
And here are our reviews and recommendations of the most popular automotive, marine, solar and industrial batteries:
ExpertPower EP12200 is Lithium Iron Phosphate (LiFePO4) battery, designed for deep cycle applications, like electric trolling motor battery, RC house battery, electric vehicle battery, solar/wind off-the-grid battery and similar.
ExpertPower EP12200 features a nominal voltage of 12 volts (actually 12.8 volts) and a nominal 0.2C capacity of at least 200Ah, @25°C. Also, it features an ultralight design and supports a huge number of charging/discharging cycles (2500-7000, or even more).
Mighty Max ML4D is large and heavy Sealed Lead Acid (SLA) Absorbent Glass Mat (AGM) BCI Group 4D battery, being able to store large amounts of energy for powering various loads, including electric trolling motors, various pumps, winches, UPS devices, etc.
Mighty Max ML4D is designed for deep cycle applications and is not suitable as cranking/starting battery, except for rather smallish gas and diesel engines, commonly found in power generators, smaller boats, and similar.
Universal Power Group UB12750 is 12V 75Ah Sealed Lead Acid (SLA) Absorbent Glass Mat (AGM) general-purpose, deep cycle battery.
UPG UB12750 belongs to very popular BCI Group 24 batteries and is one of the most popular batteries in its class, commonly used in off-the-grid applications, as a small trolling motor battery, as a UPS battery, in security and medical applications, etc.
Mighty Max ML18-12 battery is a Sealed-Lead Acid (SLA) Absorbent Glass Mat (AGM) general purpose battery, intended for standby/float and deep cycle applications. Mighty Max Battery ML18-12 battery is a spill-proof and vibration-resistant battery that can operate in almost any position (upside-down not recommended) and is almost maintenance-free.
Mighty Max Battery ML18-12 is a reliable battery that comes at an affordable price and is thus one of the most popular batteries in its class, often used as wheelchair battery, generator battery, UPS battery, as standby battery in medical and security systems, as fish finder battery, small trolling battery, etc.
Shorai LFX21A6-BS12 is an ultralight, very compact lithium starting battery, often used in motorcycles, ATVs, snowmobiles, and similar vehicles for starting internal combustion engines.
Shorai LFX21A6-BS12 may also be used as a starting battery in power generators, saving weight since it is much lighter than an equivalent lead-acid (AGM, Gel-Cell, Wet) battery.
Weize YTX14-BS AGM battery is a sealed, maintenance-free battery, intended as starting/cranking battery in motorcycles, ATVs, power generators, boats, tractors, scooters, snowmobiles, and other similar applications where small, but powerful and reliable battery is required which is able to provide plenty of power for short periods of time.
Thanks to the electrolyte suspended in Absorbent Glass Mat (AGM), Weize YTX14-BS AGM battery is very resistant to vibrations and mechanical impacts, which helps with the battery endurance in Powersports and similar applications.
ExpertPower EP12100 is an ultralight Lithium Iron Phosphate (LiFePO4) deep cycle battery, that offers great weight savings and a much larger number of charging and discharging cycles when compared with lead-acid batteries.
Since the ExpertPower EP12100 is a lithium battery, it also features an initial higher price, and it is more sensitive to charging and discharging conditions than lead-acid batteries. Nonetheless, ExpertPower EP12100 is one of the most popular lithium batteries in its class.
Renogy AGM, Pure Gel, and Hybrid Gel 12V 200Ah Deep Cycle Batteries are large and heavy, sealed lead-acid (SLA) batteries that feature the same nominal voltage and capacity, but also differ in electrolyte type.
All three batteries are intended for off-the-grid applications, security, and medical systems, as trolling batteries, RV house batteries, and similar. Although very similar, they do differ, and knowing these differences is very important when choosing the right battery.
Ampere Time 24V 100Ah LiFePO4 Deep Cycle Lithium Battery is a large and powerful, but also rather lightweight deep cycle battery, intended for various off-the-grid and outdoors applications and activities.
Ampere Time 24V 100Ah LiFePO4 Deep Cycle Lithium Battery features an intelligent Battery Management System (BMS) that protects the battery from unwanted events, improving the safety considerably. Also, if required, this battery may be connected in series (48V 100Ah battery pack) and in parallel (24V, up to 400Ah battery pack).
AIMS Power 12V Lithium Batteries are intended for deep cycle applications that require lightweight batteries that tolerate relatively strong charging/discharging currents and a very large number of charging/discharging cycles, like off-the-grid applications, RV house batteries, trolling motor batteries, electric vehicle batteries, and similar.
Despite being able to withstand relatively strong currents for deep cycle lithium batteries, AIMS Power 12V lithium batteries should NOT be used as cranking/starting batteries.
ExpertPower EXP12330 is a very popular BCI Group U1 battery, featuring a nominal voltage of 12 volts and a nominal capacity of 34.4 Ah and 10h capacity of 33 Ah - hence the label EXP12330.
ExpertPower EXP12330 is a maintenance-free, spill-proof Absorbent Glass Mat (AGM), Sealed Lead-Acid (SLA) battery, commonly used in standby and float applications and even as starting battery for smaller gas engines.
WindyNation BAT-NSAP12-100 is 12V 100Ah Sealed Lead-Acid (SLA) Absorbent Glass Mat (AGM) BCI Group 31 battery, designed for various off-the-grid, float and deep-cycle applications like solar/wind battery, UPS backup battery, security/medical battery, RV house battery, electric trolling motor battery, etc.
Due to its balanced design and features, WindyNation BAT-NSAP12-100 is one of the most popular deep-cycle AGM batteries in its class, offering the users very good performances and affordable price.
XS Power D3400 is very popular automotive BCI group 34 battery, commonly used in cars, trucks, RVs and other similar vehicles as the starting battery and as the battery for powering high power electronics including winches, stereos, pumps, lights and similar.
XS Power D3400 is Absorbent Glass Mat (AGM) Sealed Lead Acid battery with increased tolerance to vibrations and designed as spill proof battery being able to operate in almost any position.
Renogy manufactures several 12V 100Ah deep cycle batteries differing in chemistry, dimensions, electrical characteristics, warranty, price and other important features.
Renogy 12V 100Ah deep cycle batteries may be found as Absorbent Glass Mat (AGM) batteries, Gel cell batteries (two different models) and as lithium iron phosphate batteries (also two different models). Each battery type has its pros and cons, and knowing them is important for choosing the right battery for the right task.
Weize 12V 100Ah Deep Cycle AGM and Gel batteries are two very similar models of non-spillable, sealed lead acid (SLA) batteries, differing in electrolyte, size, terminals and few more details.
Although these two batteries are intended for general use and can be even used interchangeably, it is important to know their differences and avoid confusion and potential power issues.
Optima 35 RedTop is very popular and lightweight AGM starting battery featuring rather specific 'spiral-wound' cells technology, ensuring high vibration resistance, spill proof design, faster recharging, high CCA and MCA etc.
Optima 35 RedTop is used in cars, RVs, trucks, boats etc as strong and reliable starting battery. Despite having excellent RC value for the battery of this capacity, it should not be used in deep cycle applications.
Universal Power Group (UPG) UB121000 AGM battery is large and heavy battery intended for standby and cyclic use in off-the-grid, marine, security, solar, wind, medical and similar applications.
UPG UB121000 belongs to BCI Group 27 and is Absorbent Glass Mat (AGM) Valve Regulated Lead Acid (VRLA) battery of spill proof design that can be mounted in any position, with increased resistance to mechanical shocks and vibrations.
Mighty Max ML75-12 battery is Absorbent Glass Mat (AGM) Sealed Lead-Acid (SLA) deep cycle, maintenance free battery. It features spill-proof design and is intended for wide range of applications including standby and security systems, as wheel chair or trolling motor battery, emergency sump pump battery, electric vehicles battery etc.
Although designed as deep cycle battery, Mighty Max ML75-12 also features relatively high discharge rate, long service life, wide operating temperature, and low self-discharge rate. However, when used in standby applications, smart battery charger/maintainer is highly recommended for keeping the battery fully charged and ready for an emergency.
Odyssey Group 34 batteries are Odyssey 34-PC1500, Odyssey 34R-PC1500, Odyssey 34M-1500 and Odyssey 34/78-PC1500 batteries, featuring similar electrical features, with differences mostly being in the terminals arrangements.
Odyssey Group 34 batteries are true dual purpose battery, suitable for use in the automotive and marine applications, of-the-grid, medical and security systems and other situations where durable and reliable source of power is required. As usual, Odyssey Group 34 batteries are not the cheapest group 34 batteries on the market ...
VMAXTANKS XTR34-75 is BCI group 34, deep cycle AGM battery, suitable for use as automotive, marine, wheelchair battery, or it can be used in various, both standby and cycling applications.
Although labeled as deep cycle battery, this versatile battery is true dual purpose battery, being able to provide large currents, but also tolerates frequent deep discharges. However, as the depth of discharges is increased, so does its number of cycles decreases - similarly to all other AGM batteries. Nonetheless, it is tough and durable battery, thus it is not the cheapest 75 Ah 12V AGM battery on the market...
Mighty Max ML55-12 AGM battery is 12V 55Ah general purpose, deep cycle AGM (Absorbent Glass Mat) SLA (Sealed Lead Acid) battery. It features high vibration resistance and spill proof design, allowing it to be used virtually in any position.
Mighty Max ML55-12 AGM battery is commonly used as mid-size trolling motor battery, fish finder battery, for off-the-grid applications, backup and security systems, etc.
VMAXTANKS XTR4D-200, VMAXTANKS MB197-200 and VMAXTANKS MR197-200 are a group of 12V 200Ah, AGM SLA, Group 4D batteries. These are large, sturdy and heavy batteries, being able to store plenty of energy, ready to be delivered when required at the moment notice.
Although these batteries are very similar in size, weight and performance, they also differ in certain details that may be important for future user...
NorthStar NSB-AGM27, NSB-AGM27F and NSB-AGM27M are versatile, dual purpose, BCI Group 27 batteries, designed to be durable and reliable power source for even the most demanding applications.
NortStar NSB-AGM27, NSB-AGM27F and NSB-AGM27M batteries are essentially the same battery, differing only in their terminal posts - depending on their intended use.
VMAXTANKS MR-107, MB-107 and SLR-85 are BCI Size 24, AGM SLA deep cycle batteries.
These batteries feature nominal capacity of 85 Ah and nominal voltage of 12 volts. Physically they are very similar, but nonetheless, they also differ in several very important details depending on their intended purpose.
VMAXTANKS MR127-100 battery is AGM SLA, 12V 100 Ah, deep cycle, high performance battery, often used for marine, automotive and other off-the-grid applications.
VMAXTANKS MR127-100 battery is BCI Group 27 battery, featuring robust, spill-proof design, heavy duty lead tin plates, long shelf life, low self-discharge rate etc.
DieHard 38232 Advanced Gold AGM Group 34 Battery is designed as starting battery for cars, trucks, RVs and similar vehicles.
DieHard 38232 is maintenance-free, spill-proof, AGM battery, with improved resistance to vibrations and increased cycle life.
Optima Batteries D27M BlueTop and D27F YellowTop Starting and Deep Cycle Batteries are versatile, dual purpose marine and automotive batteries. Optima Batteries D27M BlueTop and D27F YellowTop are AGM (Absorbent Glass Mat) SLA (Sealed Lead Acid) batteries, with the spiral wound lead plates, offering good vibration resistance, extended life, low maintenance and faster recharging.
Optima Batteries D27M BlueTop and D27F YellowTop are completely spill proof 12V AGM batteries, mountable in virtually any position.
Optima batteries are very popular automotive and marine battery brand. BCI Group 34 batteries are commonly used as starting, dual purpose and as deep cycle batteries in cars and other vehicles, in boats, off-the-grid applications etc. Optima group 34 batteries come in several, often very similar versions, but optimized for certain applications. Choosing the right one can be daunting task, but it shouldn't. Read more ...
Battle Born 100 Ah LiFePO4 12 Volt Deep Cycle Battery is lightweight and durable drop-in replacement for similar lead acid (SLA AGM or Gel Cell, or even flooded cells) batteries. It features protective electronics that monitors battery parameters, like charging and discharging currents, voltages, temperatures and similar.
Battle Born 100 Ah LiFePO4 12 Volt Deep Cycle Battery can be directly connected in series and parallel to create battery packs with larger capacities and voltages. It can be directly charged using lead-acid chargers, just one has to be cautious regarding charging currents and voltages.
Optima 8052-161 D31M BlueTop Dual Purpose Marine Battery is very popular starting and deep cycle battery for marine and automotive applications. It is maintenance free and spill-proof SLA battery that can operate in virtually any position, featuring very good both starting and deep cycle performances. It is commonly used in single battery electrical systems found at RVs, boats, yachts, and even cars.
Odyssey 31M-PC2150 is BCI group 31 battery, designed as dual purpose battery. As starting battery it can easily provide 1000+ CCAs and as deep cycle battery it comes with 205 min RC rating.
Odyssey 31M-PC2150 is AGM SLA battery, featuring increased resistance to vibrations, spill-proof design, two types of terminals, can operate in any position etc.
It is one of the heaviest group 31 batteries on the market and far from being cheap, but it is one of the best batteries in its class (if not the best) and worth every (euro)cent.