6V 400Ah L16 Lead Carbon Deep Cycle Battery

Description

Advanced performance for demanding deep cycle applications. The 6V 400Ah Lead Carbon Battery (L16 size) is designed for superior cycle life, faster charging, and improved performance in partial state of charge conditions. Ideal for solar, off-grid, RV, and industrial systems, it delivers reliable power with enhanced durability compared to traditional AGM and flooded batteries.

Unlike standard AGM batteries, lead carbon technology reduces sulfation and extends battery life, especially in applications where batteries are not fully recharged daily.

Compatible With / Replaces

The 6V 400Ah Lead Carbon battery is a compatible replacement for L16 size deep cycle batteries including:

• L16 flooded batteries
• L16 AGM batteries
• DC400-6
• GPL-L16
• L16-AES
• US L16 series

Always confirm dimensions, terminal type, and system requirements before replacing.

Key Features

• 400Ah Deep Cycle Capacity – High capacity energy storage for extended runtime
• Lead Carbon Technology – Reduces sulfation and improves performance in partial state of charge use
• Long Cycle Life – Up to 3,000 cycles at 50% depth of discharge – significantly more cycles than standard AGM in real-world conditions
• Faster Recharge – Improved charge acceptance reduces downtime
• Maintenance-Free Design – No watering required, sealed construction
• Improved Deep Discharge Recovery – Performs better after deep cycling compared to AGM
• Long Service Life – Designed for up to 20 years in standby/float applications

Common Applications

• Off-grid solar systems
• Energy storage systems (ESS)
• RV and marine house banks
• Telecom and backup power
• Industrial and renewable energy applications

Specifications

• Voltage: 6 Volt
• Capacity: 400 Ah
• Chemistry: Lead Carbon
• BCI Group Size: L16
• Length: 11.61″ / 295 mm
• Width: 7.00″ / 178 mm
• Height: 15.91″ / 404 mm
• Height (with terminal): 16.15″ / 410 mm
• Weight: 126 lbs / 57.2 kg
• Terminal: M8 insert terminals
• Data Sheet: VTC6-400-Specifications (PDF)
• Warranty: Valiant VTC Warranty

FAQs

What is a lead carbon battery?

A lead carbon battery is an advanced lead-acid battery that uses carbon additives in the negative plate. This improves charge acceptance, reduces sulfation, and extends cycle life compared to traditional AGM and flooded batteries.

Is lead carbon better than AGM?

In many applications, yes. Lead carbon batteries perform better in partial state of charge conditions, recharge faster, and typically last longer than AGM batteries, especially in solar and off-grid systems.

Is this battery suitable for solar systems?

Yes. Lead carbon batteries are ideal for solar energy storage, especially in systems where batteries may not fully recharge every day.

Can I replace an AGM or flooded L16 battery with lead carbon?

Yes, as long as voltage, size, and terminal type match. However, you should confirm your charger or solar controller settings for optimal performance.

How many batteries do I need for a 12V or 24V system?

You will need two 6V batteries in series for 12V systems, and four in series for 24V systems. Larger systems may require multiple parallel strings.

Does this battery require maintenance?

No. This is a sealed maintenance-free battery and does not require watering.

What are the alternatives to a lead carbon L16 battery?

If you’re looking for a more traditional option, we also offer AGM and flooded L16 batteries. AGM batteries are maintenance-free and cost effective, while flooded batteries offer a lower upfront price but require regular maintenance.
You can view our L16 AGM battery or flooded options like Rolls L16 and U.S. Battery L16.

Is this battery available for shipping?

Due to its size and weight, this battery is available for in-store purchase only. Contact us to confirm availability or inquire about local delivery options.