Wuldnmar 12V Group 47 LiFePO4 Car Battery H5 — 600 CCA, Lightweight Start-Stop with BMS

The Wuldnmar 12V Group 47 LiFePO4 is a lightweight, high‑output automotive start‑stop battery delivering 600 CCA in a compact H5 form factor for direct replacement of Group 47/G47 batteries.

This lithium iron phosphate (LiFePO4) pack is engineered as a modern alternative to traditional lead‑acid starter batteries, combining a small footprint and dramatic weight savings with a robust Battery Management System (BMS) for safer operation. It fits vehicles that accept BCI Group 47/H5 dimensions and is designed to power today’s electronics, including vehicles with start‑stop systems, while lasting far longer in cycle life than conventional batteries.

Will this battery fit my car and replace a Group 47 battery?

The Wuldnmar Group 47 LiFePO4 is sized to match the common H5 / Group 47 footprint and polarity used in many passenger cars. Before buying, measure your current battery’s dimensions and note terminal orientation to confirm a proper physical and electrical fit.

• Dimensions: 9.60" L x 6.92" W x 7.75" H to match BCI Group 47/H5 applications.
• Polarity: negative on the left, positive on the right ([- +]).
• Weight: 11.02 lbs — significantly lighter than lead‑acid equivalents.
• Double‑check vehicle manual or existing battery specifications before purchase.

How much starting power and durability does it provide?

This LiFePO4 unit delivers 600 cold cranking amps (CCA), tested to withstand spikes up to 850 CCA in demanding conditions, making it suitable for typical gasoline and smaller diesel engines. LiFePO4 chemistry also offers thousands of charge cycles, giving a much longer useful life than sealed lead‑acid batteries when used within recommended charging parameters.

• Nominal voltage: 12.8V for stable output and accessory support.
• Rated CCA: 600A, with tested peaks to 850 CCA for high‑load starts.
• Designed for thousands of cycles when charged properly with a compatible LiFePO4 charger.
• Recommended charger: 12V 10A LiFePO4‑specific charger for best results.

What safety and protection features are included?

Safety is built into the battery with an internal BMS that monitors and protects the cell pack from overcharge, over‑discharge, and over‑current conditions. This reduces the risk of damage during normal vehicle operation and supports reliable service for sensitive electronics and start‑stop functions.

• Integrated BMS for cell balancing and fault protection.
• Overcharge and over‑discharge safeguards to prevent premature failure.
• Overcurrent protection to protect vehicle electronics during high loads.
• Maintenance‑free LiFePO4 chemistry—no watering or topping up required.

How does switching to this LiFePO4 battery affect fuel economy and maintenance?

Because the Wuldnmar Group 47 LiFePO4 battery is much lighter than a comparable lead‑acid unit, vehicles can see improved fuel efficiency and handling due to reduced weight. The chemistry and smart protection circuits also minimize routine maintenance issues associated with lead‑acid batteries, making this an efficient, lower‑maintenance upgrade.

• Weight savings translate to modest fuel efficiency gains in real‑world driving.
• Smart protection reduces parasitic drain and maintenance needs.
• Eco‑friendly chemistry avoids acid and heavy metals common to lead‑acid cells.
• Ideal for vehicles with frequent start‑stop cycles or heavy accessory loads.

Who is this for: Drivers who want a direct, lighter replacement for BCI Group 47/H5 starter batteries—especially owners of compact and mid‑size sedans, crossovers, and some small SUVs from brands like Chevrolet, Toyota, Ford, Honda, and BMW. It suits people seeking longer battery life, reduced weight, and reliable cold‑start performance while using a 12V 10A LiFePO4 charger for recharging. If you’re unsure about fitment or compatibility, contact Wuldnmar customer support with your vehicle make, model, and current battery measurements for personalized guidance.