51.2V Rack Stackable LiFePO4 Battery | High 90% DoD for C&I Energy Storage

Commercial and industrial (C&I) solar + energy storage projects demand flexible, long-life battery systems that maximize usable energy. Traditional fixed-capacity battery systems often oversize the initial investment and limit expansion flexibility. Our 51.2V rack stackable LiFePO4 battery solves this challenge with modular architecture, high depth of discharge, excellent cycle performance and simple parallel expansion, ideal for EPC contractors, solar installers and wholesale battery distributors worldwide.

Key Performance Advantages

The biggest highlight of this stackable rack battery is its 90% recommended DoD and 6000 cycles @90% DoD to 80% EOL. Many competing LiFePO4 batteries only quote cycle life at 80% DoD. By allowing continuous operation at 90% depth of discharge, our system unlocks more usable energy from every kWh installed, directly improving project ROI for peak shaving, self-consumption and backup power applications.

Each SMX-512314A single battery pack has a rated capacity of 314Ah. Standard charging current is 100A, while max charge and discharge current reaches 200A per pack. Strong current capability supports high-power charge/discharge cycles for heavy commercial loads.

Temperature adaptability is another strong point:

• Charging temperature range: 0 ~ 50°C
• Discharging temperature range: -20 ~ 50°C

It can still discharge reliably in cold environments down to -20°C. Please note: charging below 0°C is not permitted. For cold-climate projects, heating configuration can be added.

The standard protection grade is IP20 for indoor installation. IP rating upgrade is available upon request for projects with higher environmental requirements. Master-slave BMS manages each battery pack when stacked in parallel. It monitors cell voltage, temperature and balance cells dynamically, preventing overcharge, over-discharge, overcurrent and thermal runaway risks. Modular stacking design lets project owners expand capacity step by step: start with smaller capacity for pilot deployment and add more packs later as energy demand grows. This incremental expansion greatly lowers upfront capital pressure for C&I projects.

Suitable Applications

This rack stackable LiFePO4 battery is designed for indoor commercial & industrial energy storage:

✅ Solar + storage for factory self-consumption

✅ Peak shaving & demand charge reduction

✅ Off-grid microgrids

✅ Critical backup power for workshops and facilities

✅ Distributed C&I ESS projects for global renewable EPCs

Why EPC Contractors & Distributors Choose This Series

For EPC companies evaluating storage systems, reliable performance, test reports and complete certifications are non-negotiable. Our rack LiFePO4 battery comes with full export documents including UN38.3, CE LVD/EMC and IEC62619. All battery packs go through full factory aging and performance testing before shipment. We support factory audits and can provide datasheets, test reports and engineering documentation for project tender and grid approval.

For wholesale distributors, modular rack design brings clear business benefits. Pre-tested battery modules reduce on-site installation time for local installers. We maintain safety stock, with short lead time for both samples and bulk orders. We strive to deliver every order on schedule. OEM & ODM customization is available for long-term distribution partners. Full marketing assets including product photos, datasheets and factory video materials are supplied to support your local sales.

Important note: Standard IP20 version is for indoor installation only. Outdoor deployment requires upgraded IP protection. Please confirm inverter compatibility before system design.

Frequently Asked Questions

Q1: What is the cycle life? A: 6000 cycles @90% DoD, down to 80% capacity retention (80% EOL). This is tested under standard conditions.

Q2: Can multiple packs stack and run 200A simultaneously after parallel? A: The 200A max current rating applies per single pack. Total system current and parallel limits depend on BMS configuration. Contact our team to get the parallel maximum current specification for your project design.

Q3: Can I add new battery packs to an existing stack later? A: This is a core advantage of modular rack storage. Please consult us for the rules for mixing old and new packs during incremental capacity expansion.

Q4: What certifications are available? A: UN38.3, CE LVD/EMC, IEC62619. UL1973 can be arranged for North American projects.

Get Your Datasheet & Quotation

If you are an EPC contractor, solar installer or energy storage distributor looking for scalable rack LiFePO4 batteries for commercial solar storage projects, contact our team now to download the full datasheet, verify inverter compatibility and get wholesale pricing.