12V 50Ah Lithium ion Battery
The Lithium-Ion Seastar battery 12V-50Ah offers a high level of safety through the use of Lithium Ferro Phosphate technology (LiFePO4 or LFP).
Seastar Battery 12V-20Ah integrates an innovative Battery Management System (BMS) in its casing to ensure a very high level of safety in use.
Lithium-Ion Battery 12V 50Ah 640Wh Description
The Seastar battery has been designed to replace lead-acid batteries advantageously, by offering a quadrupted energy density for an equivalent weight and size.
Thanks to its technology, the lithium battery Seastar battery 12V-50Ah can be installed in any position (vertically, lying on the side, or head down).
The electrical parameters of the Seastar battery lithium battery 12V-50Ah are compatible in all respects with those of an AGM lead battery of 12V. In the vast majority of cases, the charging system can be kept the same and no additional accessories are required to perform the replacement.
Given Seastar battery can be 100% discharged, a lead acid or AGM battery can be replaced by a Seastar battery with half the capacity of a lead acid battery
The battery is protected by a waterproof ABS case, splash, and dust-resistant (Protection Index IP65).
The product Seastar battery is light, compact, efficient, and can be used for all types of uses and applications. Seastar battery is designed to drop-in replacement of old generation batteries (Lead VRLA, AGM, or OPZ batteries) in 12V, that are low performance and harmful to the environment (use of heavy metals and acid electrolytes).
12V battery pack – Lithium Iron-Phosphate (LiFePO4) – 50Ah
- High Service Life: 3000 cycles and more
- Deep discharge allowed up to 100 %
- Ultra safe Lithium Iron Phosphate chemistry (no thermal run-away,
no fire or explosion risks) - Embedded BMS (Battery Management System): improve lifespan
AND secure the battery - No Lead, no rare earth, no acid, no degassing
- Calendar life > 10 years
- Excellent temperature robustness (-20 °C up to +60 °C)
- Flexible deployment: up to 16 packs in parallel and 4 in series
- Constant power during discharge (very low internal resistance)
- Very low Peukert’s losses (energy efficiency >98 %)
- Very low self discharge (<3 % per month)
- No memory effect
- About 50 % lighter and 40% smaller than equivalent Lead-AGM
battery with the same usable energy - Certification: CE, RoHS, UN 38.3
| Electric | Nominal voltage | 12.8V |
| Nominal capacity | 50 Ah | |
| Stored energy | 640 Wh | |
| Internal resistance | ≤ 50mΩ | |
| Cycles | >3000 cycles | |
| Self discharge | < 3% per month | |
| Energy efficiency | > 98% | |
| Standard Charge | Charge voltage | 14.4 V ± 0.2V |
| Charge mode | CC/CV : Constant Current / Constant Voltage | |
| Continuous charge current / Maximum charge current | 25 A / 50 A | |
| BMS charge cut-off voltage | 14.8V ± 0.1V | |
| Standard Discharge | Instant peak discharge current | 150 A ±50 A (max 100ms) |
| Continuous discharge current | 55 A (704 W) | |
| Maximum discharge current (< 30s) | 90 A (1.152 kW) | |
| BMS discharge cut-off voltage | 10 V | |
| Environment | Charge temperature range | 0°C to +60°C |
| Discharge temperature range | -20°C to +60°C | |
| Storage temperature | 0°C to +50°C @60±25% relative humidity | |
| IP protection level | IP 65 | |
| Mechanical | Casing material | ABS |
| Dimensions | L : 196mm x P : 135mm x H : 172 mm |
Lithium-Ion Battery 12V 50Ah Suitable For:
- Deep Cycle Applications
- Marine Application
- Trolling Motors <30LBS Of Thrust
- Mobility Scooters
- Electric Wheel Chairs
Lithium-Ion Battery FQA
Seastar batteries use Lithium Iron Phosphate chemistry (LFP) which is one of the safest Lithium-Ion technologies. This chemistry is not subject to thermal runaway, is non-flammable, and is considered as non-hazardous by international regulation standards.
Each battery is fitted with a high-quality Battery Management System (BMS) that ensures a safeguard role during battery operation. The BMS is designed to deliver high power in complete safety for a very large spectrum of applications,
Seastar batteries are commonly used for Marine, Recreational vehicles, Golf Cart applications, CCTV, robotics, PV energy storage, etc.
Seastar battery can be used for any system or application that would normally use Lead acid battery (AGM, GEL) in 12V, up to 48V. After removing your old batteries, place the Seastar battery in the same way.
Seastar batteries can be partially charged or discharged, unlike Lead Acid batteries that need to be fully charged after use or before storage.
For instance, you can leave your battery half-charged for some weeks without any issues.
If you plan to store the battery for a long period (> 2 months), you need to charge the battery at a minimum of 25% of SoC (State of Charge) before storage. It is necessary to check battery voltage every 6 months during storage.
Seastar lithium-ion technology uses the latest and most advanced built-in battery management system (BMS) to monitor and prevent damage to the battery during use.
You may utilize a Lead-acid charger with Seastar, but some customers prefer using a Lithium charger to keep a better lifespan.
Several charging sources are possible:
Alternator: Most alternators (marine, RV, cars) will efficiently charge Seastar lithium-ion technology as soon alternator charge voltage is between 14.0V and 14.8V
Conventional Lead-Acid battery charger: The Seastar Management System (BMS) is designed to be compatible with standard chargers. You need to check that the charger has a built-in CC/CV charge algorithm (Constant Current / Constant Voltage) and charger's maximum voltage is comprised between 14.0V and 14.8V
Lithium-Ion charger: This is the best way to charge a Seastar Lithium-ion battery. These chargers embed some dedicated charge algorithm with precise charge voltage. It also manages efficiently charges floating voltage and duration in order to maximize battery life span.