EEL 12V MB56 628Ah DIY Battery Box with Inverter Communication& Bluetooth, Featuring JK 300A BMS & Optional Heater

No Screen / No BMS / No

$299.99

EEL 12V MB56 628Ah DIY Battery Box with Inverter Communication& Bluetooth, Featuring JK 300A BMS & Optional Heater

$299.99

Screen No Screen With 3.2 inch Screen

BMS Model No BMS 300A(JK-B2A8S30P) 300A With inverter communication(JK-B2A8S30PHCR)

Heating Pad No Yes

Reliable shipping

Flexible returns

NOTE:

1.*LiFePO4 cells are not included in the package*

Before assembling the battery pack, please make sure your battery cells are consistent.

2.This battery case is not suitable for dual-terminal batteries!

3.This product is from Chinese inventory and is shipped by sea by default, with a delivery time of approximately 30 to 50 business days. If you need to switch to air freight, please contact us.

Specifications:

Standard Voltage: 12V

Maximum Discharge Current: 300A

Maximum Continuous Charge Current: 300A

Maximum Continuous Discharge Current: 300A

Communication: CANBUS and RS485

(Models with communication support only)

Material: Steel

Weight: 19kg

Dimensions: 400*370*260mm

Warranty: 5 years

OEM/ODM: Supported

Package Includes:

• 2 * 400A Terminal(P+& P-)

• 8 * Epoxy Sheets

• 1 * JK BMS Switch Cable/3.2-inch Display

• 6 * Insulation Covers

• 1 * 12V PCB

• 1 * 315A Class T Fuse

• 3 * Flexible Copper Busbars (for cell connection)

• Other Accessories

• Bluetooth BMS Model: JK-B2A8S30P/B2A8S30PHCR

JK BMS Quick Setup

Learn how to set up your JK inverter BMS, including application and software operation instructions and troubleshooting.

⚠️ Important: Do not change your BMS password. This may lock you out of the device or even disable it. If you are locked out, please visit this guide to obtain your unlock code.

View full guide →

12V Metal Battery Case 628AH

This rugged metal battery enclosure is specifically designed for DIY 12V battery builds, housing four 3.2V EVE MB56 628Ah prismatic cells to provide a secure and portable storage solution for your power system. With dedicated internal space for a BMS (Battery Management System) and fuse installation, it is an ideal choice for DIY LiFePO4 battery projects.

Key Features:

- Rugged Construction: Welded steel structure designed to protect your battery cells.
- Interior Space: Ample room for installing a BMS and fuse.
- Portability: Easy to transport for reliable power wherever needed.
- Includes M8 terminals with stainless steel bolts.

Interior Dimensions:

- Length: 357 mm
- Width: 295 mm
- Height: 210 mm

Exterior Dimensions:

- Length: 400 mm
- Width: 370 mm
- Height: 260 mm

Packaging Details

- High-density custom-cut foam for enhanced battery protection
- 5-ply export-grade corrugated cartons, certified for hazardous materials
- Pre-shipment battery labeling on every unit
- Wooden crating available upon request for added transport security

US/EU Warehouse (US Stock) – Fast Delivery

- DDP (Delivered Duty Paid) service: No extra taxes; door-to-door delivery
- 3-7 day delivery via freight truck, DPD, FedEx, or UPS after dispatch

China DDP Sea Shipping – Cost-Effective Option

- DDP inclusive; no additional taxes; door-to-door delivery
- 45-60 day delivery via sea freight + local carriers (truck/DPD/FedEx/UPS)

Shipping Restrictions

- Unable to deliver to island addresses

Tracking Information

- Tracking updates provided after local carrier pickup
- Contact our support team anytime for assistance

Brand: EEL BATTERY

Model:EEL-12V-JK-628Ah
BMS Model: JK-B2A8S30P/B2A8S30PHCR
Applicable Battery Cells: 628Ah(352mm × 72mm × 207mm)
Weight: 19KG

We offer multiple payment methods to meet your needs:

PayPal / Credit Card / Visa: Subject to a 5% international transaction fee. This option ensures faster processing and buyer protection.
Other Online Payment Platforms
Bank Transfer (Wire/TT): Fixed bank fee of approximately $48–100 per transaction (varies by bank). Recommended for large orders to minimize overall transaction costs.

Tip: For high-value purchases, we advise using bank transfers to reduce additional fees. Contact us anytime with payment-related questions.

**EEL 12V 628Ah Battery Enclosure**
Designed for use with EVE MB56 628Ah LiFePO4 prismatic cells, this robust enclosure integrates a **300A JK BMS** for advanced battery management and a **315A T-class fuse** for enhanced circuit protection. The system ensures secure operation and prolongs battery life, making it ideal for demanding energy storage applications.

The EEL 12V MB56 628Ah 8kWh portable power bank can be widely used for powering RVs, golf carts, yachts, etc.

Upgrading from Lead-Acid to Lithium Batteries

Converting your lead-acid battery system to a lithium-ion system is a technical upgrade that significantly enhances performance and service life. Here is a core guide of considerations and steps.

⚠️ Safety Precautions

Voltage Match: Ensure the lithium battery pack (e.g., 12V, 24V, 48V) matches the original system's nominal voltage exactly.
BMS is Essential: The lithium battery pack must be equipped with a dedicated Battery Management System (BMS) to provide protection against overcharge, over-discharge, overcurrent, and temperature extremes.
Charger Replacement: You must use a dedicated charger compatible with the lithium battery chemistry (e.g., LiFePO4). Never use the original lead-acid battery charger directly, as it may cause a fire hazard.
Space & Ventilation: While lithium batteries are often more compact, ensure the installation location is well-ventilated and the battery is securely mounted.

🔧 Core Steps for Conversion

System Assessment: Confirm the voltage, continuous power, and peak current requirements of your application (e.g., RV, boat, solar storage system, golf cart).
Battery Selection:Type: Lithium Iron Phosphate (LiFePO4) batteries are the preferred choice for conversion due to their high safety, long cycle life (typically 2000+ cycles), and temperature tolerance.Capacity: Based on your lead-acid battery's Amp-hour (Ah) capacity, you can select a lithium battery of equal or greater capacity for extended runtime.Integration: Choose a "plug-and-play" style lithium battery pack with a built-in case, BMS, and terminals for simplified installation.
Upgrade Charging System: Purchase or adjust all charging equipment (including solar charge controllers, onboard chargers) so their output parameters fully match the lithium battery's requirements.
Installation & Connection:Disconnect all power sources.Remove the old lead-acid batteries and charger.Install the new lithium battery pack, connecting the positive and negative terminals correctly as per instructions (usually positive first, then negative).Install and connect the new charger.
Testing & Commissioning: Reconnect power, test voltage under no load, then conduct a low-load operational test to ensure the BMS and system are functioning normally.

💎 Key Benefits of Upgrading

Lighter Weight: Approximately 1/3 the weight of an equivalent lead-acid battery.
Longer Lifespan: Cycle life can be 5-8 times longer than lead-acid batteries.
Higher Usable Capacity: Safely utilize 80%-90% of the rated capacity, compared to typically 50% for lead-acid.
Faster Charging: Supports higher charge currents, significantly reducing recharge time.
Low Maintenance: Virtually maintenance-free, with no need for regular watering.

📞 Professional Recommendation
For complex electrical systems (e.g., RVs, off-grid solar), we strongly recommend consulting with a qualified technician for assessment and installation to ensure system compatibility and safety.

(A perfect example is our solution: using the EEL 12V MB56 Battery Case paired with EVE MB56 cells to build a high-performance 12V/660Ah LiFePO4 system.)

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