Gama Sonic 3.2 V 6,000 mAh LiFePO₄ (Flat Pack)

Overview

The Gama Sonic 3.2 V 6,000 mAh LiFePO4 (flat pack) battery is a compact, high-cycle energy source designed for integrated solar lighting and other low-voltage devices that require dependable overnight runtime. Its flat profile helps it fit tight compartments where cylindrical cells will not.

Key Specs

Nominal voltage	3.2 V (LiFePO4)
Capacity	6,000 mAh (6 Ah)
Form factor	Flat pack
Cycle life	Typically ~2,000+ cycles under proper use (varies by depth of discharge and temperature)
Typical use	Solar street/area lights, billboard/sign lighting, commercial solar fixtures

When to Choose This Battery

• Use if your fixture specifies a 3.2 V LiFePO4 pack and space is limited.
• Use for long nightly runtimes or multi-day cloudy conditions when paired with appropriately sized solar and charge control.
• Avoid if your device expects 3.7 V Li-ion, 6 V/12 V lead-acid, or a cylindrical pack unless the manufacturer explicitly supports this format.

Compatibility and Fit Checks

• Verify chemistry and voltage: device must support 3.2 V LiFePO4.
• Confirm connector type and polarity match the fixture.
• Check physical dimensions and cable exit orientation to ensure a secure, strain-free fit.
• Ensure the device’s charge controller uses a LiFePO4 profile (CC/CV to ~3.60–3.65 V; no float hold).
• If using packs in series/parallel, only do so if the manufacturer allows it and all packs are identical age, capacity, and state of charge with proper balancing.

Runtime Planning

Estimate runtime with: Runtime (hours) ≈ (Capacity Ah × 3.2 V × system efficiency) ÷ Load (W).

• Example: 2 W LED at ~85% system efficiency → (6 Ah × 3.2 V × 0.85) ÷ 2 W ≈ 8.2 hours.
• Example: 1 W LED at ~85% efficiency → ≈ 16.3 hours.

Actual runtime depends on temperature, LED driver efficiency, depth of discharge, and controller cutoffs.

Charging Guidelines

• Use a LiFePO4-specific charge profile (constant current/constant voltage up to ~3.60–3.65 V).
• Typical charge current is 0.2–0.5C (about 1.2–3.0 A) if supported by the device; follow the fixture’s rating.
• Do not use lead-acid or 3.7 V Li-ion chargers.
• Avoid prolonged float charging; LiFePO4 does not require it.

Installation Checklist

• Power off the fixture and disconnect solar input.
• Inspect the compartment for sharp edges; add padding or insulation where needed.
• Secure the pack to prevent movement and vibration.
• Double-check polarity before connecting.
• Perform a full charge cycle on first use to allow the controller to learn cutoffs (if applicable).

Maintenance and Storage

• Periodically check connectors and wiring for corrosion or looseness.
• Avoid storing fully discharged; store around 40–60% charge in a cool, dry place (approx. 32–77°F / 0–25°C).
• Top up every 3–6 months during storage.
• Keep away from puncture, crush, and direct heat sources.

Pros and Cons

• Pros: Long cycle life, stable chemistry, compact flat profile, good performance across frequent charge/discharge.
• Cons: Requires LiFePO4-specific charger, lower nominal voltage than 3.7 V Li-ion (not a drop-in swap), physical format may not fit cylindrical bays.

Alternatives

• Need higher voltage? Consider a 2S (6.4 V) LiFePO4 pack if your device supports it.
• Replacing SLA? Use only purpose-built LiFePO4 drop-in replacements with matching voltage and built-in protection; do not substitute a single 3.2 V pack for 6 V/12 V systems.

FAQ

Can I replace a 3.7 V Li-ion pack with this 3.2 V LiFePO4 pack?

Not unless the device specifically supports 3.2 V LiFePO4. The lower nominal voltage and different charge profile can cause malfunction or damage.

How do I know my charger is compatible?

Check the controller’s datasheet for a LiFePO4 profile with a final charge voltage around 3.60–3.65 V and no long-term float. If it references SLA or 4.2 V Li-ion, it is not compatible.

Is cold-weather charging safe?

Charging LiFePO4 below freezing can degrade the cells. If the installation sees sub-freezing temperatures, use a controller with low-temperature charge protection or schedule charging when above 32°F (0°C).

Can I use multiple packs in parallel for more capacity?

Only if the manufacturer approves. Packs must be identical and balanced, with proper wiring and protection. Mismatched packs can cause imbalance and safety issues.

How should I dispose of the battery?

Recycle through an authorized e-waste or battery recycling program. Do not dispose of in household trash.

Note: Always follow your fixture manufacturer’s battery specifications for chemistry, voltage, dimensions, and charging.