NaVolt H6-12V-600: Technical B2B Buyer Guide for Sodium-Ion AGM/EFB Replacement

Introduction: Why evaluate the NaVolt H6-12V-600 for AGM/EFB replacement

Direct answer: the NaVolt H6-12V-600 is a 12V sodium-ion start-stop battery with an approved CCA of 1000A, a rated capacity of 50Ah ±5%, a pack-level discharge cutoff of 6V, an approved discharge temperature range of -45°C to 60°C and a charging voltage of 15.8V. It is a realistic candidate for AGM/EFB replacement in cold-climate start-stop duty, but it is not a confirmed drop-in for any specific vehicle: case dimensions, terminal layout and charging-system compatibility must be verified with NaVolt engineering before a purchase order is placed.

NaVolt manufactures sodium-ion start-stop batteries for international B2B buyers — fleet procurement managers, battery distributors, and OEM/ODM customers who need a specification-led alternative to lead-acid AGM/EFB starting batteries. The H6-12V-600 sits in the H6 series of that range.

All figures in this guide come from NaVolt's approved technical documentation for the H6-12V-600 (model technical specification, source date 2026-04-27). The guide translates those figures into practical evaluation criteria — cold-climate discharge, charging limits, physical fitment and procurement readiness — so that a technical buyer can qualify the part without relying on marketing copy. It covers technical specifications and qualification criteria; commercial terms such as price, lead time and warranty are quoted directly by NaVolt on request.

NaVolt H6-12V-600 approved specifications at a glance

The table below summarizes the approved H6-12V-600 parameters that matter for B2B qualification. Values from other models in the H series are not interchangeable with these.

Parameter	Approved specification
Nominal voltage	12V
Rated capacity	50Ah ±5% at 25°C standard charge/discharge
CCA	1000A
Internal resistance	≤4mΩ
Maximum continuous discharge current	≤50A (1C)
Maximum continuous charge current	≤25A (0.5C)
Charging voltage	15.8V
Discharge cutoff voltage	6V at pack level
Discharge temperature range	-45°C to 60°C
Charging temperature range	-20°C to 45°C
Low-temperature charge limit	0°C to 5°C: charge at 0.1C
Maximum dimensions (W×D×H)	281 × 175 × 190 mm
Weight	7.85 kg ±0.5 kg
Storage temperature range	0°C to 45°C

Two parameters are routinely misread on this model:

• The model code does not define CCA. "600" is part of the model identifier; the approved cold cranking rating is 1000A.
• The discharge cutoff is a pack-level limit, not a zero-volt capability. The approved cutoff is 6V. The H6-12V-600 is not a zero-volt discharge product, and any claim of that kind should be treated as unverified.

Cold-climate performance and discharge temperature range

The approved discharging temperature range for the H6-12V-600 is -45°C to 60°C. For procurement purposes that range — rather than a headline claim — is the authoritative specification for assessing whether the battery can support operation in a cold environment.

NaVolt's website highlights cold-start behaviour as a sodium-ion value proposition. A technical buyer should read that as a positioning statement and qualify the part against the approved -45°C to 60°C discharge range, then confirm the cranking current the target vehicle actually needs with NaVolt engineering. The approved range describes the thermal envelope within which discharge is specified; it does not by itself certify a given engine start at a given temperature.

CCA, peak current and continuous discharge current are different metrics

These three figures are frequently treated as interchangeable in supplier datasheets, and they are not:

• CCA (cold cranking amps) is a test result. It is defined by a specified discharge current held for a specified duration at a specified low temperature while terminal voltage stays above a specified cutoff voltage. The approved CCA for this model is 1000A, and it is only comparable with another CCA figure measured under the same test definition.
• Peak current describes a very short inrush burst. It relaxes or omits the duration and voltage-cutoff constraints that define CCA, so a peak-current figure and a CCA figure cannot substitute for one another.
• Continuous discharge current describes a sustained load. For the H6-12V-600 the approved continuous limit is ≤50A (1C).

When comparing the H6-12V-600 with a lead-acid AGM/EFB battery, check which quantity each supplier is quoting before drawing any conclusion about starting capability.

Charging requirements and low-temperature charge limits

Charging is the constraint that most often decides whether a sodium-ion start-stop battery is viable in a fleet. For the H6-12V-600:

• Charging voltage: 15.8V
• Maximum continuous charge current: ≤25A (0.5C)
• Charging temperature range: -20°C to 45°C
• Low-temperature charge limit: at 0°C to 5°C, charge at 0.1C
• Standard charge procedure: 25°C ±5°C, 0.5C constant-current/constant-voltage to 3.95V per cell, until the current falls to 0.05C

Two practical consequences follow. First, the vehicle's charging system — alternator, DC-DC converter or external charger — has to deliver the approved 15.8V charging voltage and stay within the ≤25A (0.5C) continuous charge current. Second, cold-weather charging has to be curtailed: between 0°C and 5°C the approved procedure is 0.1C, and standard 0.5C charging should not be assumed permissible below 0°C without written confirmation from NaVolt.

Note the asymmetry between the charge and discharge windows: the approved discharge range reaches -45°C, while charging is specified down to -20°C and is derated near 0°C. Fleets operating in deep cold should plan charging around that difference.

Storage follows a separate limit: 0°C to 45°C. Depots and vehicles that leave the battery outside this window for long periods need a different storage plan.

Physical dimensions, weight, and pack-level protection

Approved physical data for the H6-12V-600:

• Maximum dimensions (W×D×H): 281 × 175 × 190 mm
• Weight: 7.85 kg ±0.5 kg
• Pack-level protection rating for the H6 series: IP67, as stated in the approved H6 series data

The dimensions are maximum figures, so the case should be treated as occupying the full envelope. The IP67 rating applies at pack level to the H6 series; it should not be extended to other models, to individual cells, or to a modified OEM pack without separate evidence. Terminal type, post orientation and tightening torque are not covered by this guide — confirm them with NaVolt engineering when finalizing a mounting or enclosure design.

Fitment and application guidance

The H6-12V-600 is intended for passenger cars, start-stop systems, and AGM/EFB replacement in cold climates. This guide does not list specific vehicle makes or models as drop-in compatible, because NaVolt has not supplied verified vehicle-specific fitment data for this model. Treat any vehicle-level compatibility statement as something to confirm in writing rather than assume.

A pre-purchase qualification checklist for fleet and distribution buyers:

1. Envelope and tray. Compare the 281 × 175 × 190 mm maximum dimensions against the existing tray, hold-down, cabling clearance and any heat shielding. The case must not contact adjacent components under vibration.

2. Terminals. Confirm post type, diameter, polarity orientation and torque with NaVolt engineering; these are not specified in this guide.

3. Retention. Check that the vehicle's clamp or bracket engages the case base as intended for the H6 format.

4. Charging system. Verify that the alternator or DC-DC converter delivers the 15.8V charging voltage within the ≤25A (0.5C) continuous charge current, and that the vehicle's energy-management logic tolerates that profile.

5. Cold-climate charging. Plan for 0.1C charging between 0°C and 5°C, and do not assume 0.5C charging below 0°C without NaVolt confirmation.

6. Discharge duty. Check sustained loads such as start-stop cycling and accessory draw against the ≤50A (1C) continuous discharge limit, and raise cranking requirements with NaVolt as a separate question.

7. Cutoff and parasitic loads. The pack cutoff is 6V; confirm that always-on loads and the vehicle's low-voltage logic behave correctly as the pack approaches that level.

8. Storage and warehousing. Match depot and workshop conditions to the 0°C to 45°C storage range.

9. Documentation. Request the current datasheet and confirm export documentation for the destination market before booking freight.

For broader selection logic across case sizes and duty cycles, see NaVolt's start-stop battery guide.

B2B procurement, OEM/ODM, and export support

NaVolt supports B2B buyers through the qualification process rather than at the point of order alone:

• Engineering review of the application, including charging profile and fitment questions
• Testing support and technical documentation for internal approval processes
• Export documentation assistance
• After-sales technical diagnosis
• Warranty coordination
• OEM/ODM custom PACK development for buyers who need modified specifications, terminal arrangements or enclosure formats

For buyers coordinating cross-border shipments, see sodium-ion battery export documents. Product and application updates are published on the NaVolt news hub.

If your requirement differs from the standard H6-12V-600 configuration — a different terminal layout, a modified enclosure, or another capacity point within the H6 series — raise it as an OEM/ODM enquiry so NaVolt engineering can confirm what is feasible before specification freeze.

Frequently asked questions about the NaVolt H6-12V-600

What are the approved specifications of the NaVolt H6-12V-600?

12V nominal, 50Ah ±5% rated capacity at 25°C standard charge/discharge, 1000A CCA, internal resistance ≤4mΩ, maximum continuous discharge ≤50A (1C), maximum continuous charge ≤25A (0.5C), charging voltage 15.8V, pack-level discharge cutoff 6V, maximum dimensions 281 × 175 × 190 mm, weight 7.85 kg ±0.5 kg, storage temperature 0°C to 45°C.

Does the "600" in the model name mean 600 CCA?

No. It is part of the model identifier. The approved CCA is 1000A.

What is the cold-weather discharge range?

-45°C to 60°C, per the approved discharge temperature specification. This is the figure to use when screening the battery for cold-climate duty.

What are the charging limits, and what changes at low temperature?

Charging voltage 15.8V; maximum continuous charge current ≤25A (0.5C); charging temperature range -20°C to 45°C; between 0°C and 5°C, charge at 0.1C. The standard charge procedure is 25°C ±5°C, 0.5C to 3.95V per cell until current falls to 0.05C.

Is the H6-12V-600 a drop-in replacement for an AGM/EFB battery?

It is intended for AGM/EFB replacement in passenger cars and start-stop systems, and the H6 case dimensions are the first thing to check. Vehicle-specific compatibility has not been verified for this model, so confirm dimensions, terminals and charging logic with NaVolt before committing.

Can the pack be discharged to zero volts?

No. The approved discharge cutoff voltage is 6V at pack level.

What is the protection rating?

The H6 series carries an IP67 pack-level rating according to the approved H6 series data. It applies at pack level only.

Which support options are available to distributors and OEM buyers?

Engineering review, testing support, export documentation assistance, after-sales technical diagnosis, warranty coordination, and OEM/ODM custom PACK development.

CTA: Request the H6-12V-600 datasheet or a quote

For the full H6-12V-600 datasheet, export documentation, or an OEM/ODM consultation on a modified configuration, contact NaVolt with your application details — vehicle or system type, operating temperature range, charging profile and expected annual volume — so engineering can respond with the relevant documentation.