Braille G30H Lithium Battery — 30Ah LFP power for audio-loaded Harley Touring and performance motorcycle builds
The Braille Green Lite G30H is a 12.8V LiFePO₄ (LFP) motorsports battery purpose-built for high-demand motorcycle setups — delivering 30Ah capacity, 752A peak cranking, and a 75-minute reserve in a 4.0 kg package.
Where a lead-acid equivalent would weigh 14–18 kg and struggle to hold voltage under sustained amplifier loads, the G30H brings serious weight savings, a flat discharge curve that protects amplifier headroom, and a service life measured in thousands of cycles rather than hundreds. It is stocked at MAA specifically for riders who want a power foundation that matches their upgraded electrical load.
Who This Is For
The G30H is the right choice for any Harley Touring rider — or other motorcyclist — running a serious aftermarket audio system: multiple amplifiers, DSP processing, subwoofer channels, and auxiliary loads. If your build is pulling consistent current beyond what a factory battery can reliably supply, or if you want to eliminate significant unsprung weight, this is the correct upgrade path. It is rated for audio systems up to 5,000W total when the electrical system is correctly sized — see the system note below for dual-battery guidance at higher power levels. It is also suited for total loss applications (drag, dyno, track builds with no alternator). It is also the required upgrade for any amplifier that lists a dedicated lithium battery as an install prerequisite.
What This Is Best For
- Sustaining voltage under amplifier load — LFP chemistry maintains a flat discharge curve close to nominal voltage throughout most of its capacity. A lead-acid battery under heavy current draw sags to 12V or below, reducing amplifier headroom and causing clipping behaviour at high volume. The G30H holds its voltage longer, giving amplifiers a stable, predictable supply.
- 752A peak cranking at 4.0 kg — the G30H delivers more starting current per kilogram than a lead-acid equivalent. On a loaded Harley Touring with accessories running and a hot engine, this is real headroom for confident starts in all conditions.
- 300A continuous discharge for multi-amplifier builds — sustained high-current draw from multiple channels simultaneously, without voltage collapse at the battery terminals or nuisance trips on protection circuits.
- 75-minute reserve capacity — engine-off listening without draining to a depth that shortens battery life. Combined with the fast recharge rate, the G30H recovers quickly once the alternator resumes charge.
- 4.0 kg vs 14–18 kg for lead-acid equivalents — in a Touring application this is weight removed from the same area of the bike carrying the battery box and wiring. For performance or custom builds, the weight reduction changes how the bike rides, not just the spec sheet.
- Total loss setups — for drag bikes, dyno pulls, or any application without an alternator, the G30H's 30Ah capacity and 300A continuous discharge rating give a defined, reliable run time for high-current events.
Power System Sizing: Single vs Dual Battery
The G30H is rated for audio systems up to approximately 5,000W total system power when the alternator, wiring gauge, and run length are correctly matched to the load. For systems at or above this threshold, a second battery is strongly recommended to distribute the sustained current draw and protect the primary battery's service life. If you are unsure whether your build needs a single or dual battery setup, contact us before ordering.
The Bottom Line
The Braille G30H delivers 30Ah of LFP capacity, 752A peak cranking, and a flat voltage curve in a 4.0 kg package — the right power foundation for any high-demand motorcycle audio or performance build. It is not a drop-in upgrade for the sake of it; it is the correct choice when your electrical load has outgrown what lead-acid chemistry can reliably supply.
Why LFP Chemistry for Motorcycle Audio
Lithium Iron Phosphate (LiFePO₄ / LFP) behaves fundamentally differently from AGM or conventional lead-acid under the conditions common to motorcycle audio builds.
Lead-acid chemistry has a steep discharge curve — voltage drops progressively as the battery depletes, and drops sharply under high-current draw. In an audio system, this means amplifiers are operating from a declining supply voltage, which reduces output headroom and can trigger protection circuits or thermal shutdowns under sustained high-level listening. On the road: voltage sag from a lead-acid battery is one of the most common causes of intermittent distortion and reduced bass output at volume — the amplifier is being starved, not the speaker.
LFP maintains a nearly flat discharge curve across its usable capacity range, typically holding close to 12.8V nominal until the battery is near depletion. Combined with the G30H's 300A continuous discharge rating, this gives amplifiers a stable, consistent supply voltage throughout a ride. On the road: the difference is most noticeable on extended hard listening — volume, dynamics, and tonal balance remain consistent rather than degrading as the ride progresses.
LFP also recharges more efficiently and at a higher acceptance rate than lead-acid, recovering more usable capacity during a typical ride. The G30H's recharge voltage window of 14.4V–14.6V is compatible with standard motorcycle alternators. A lithium-compatible smart charger is recommended for storage and maintenance charging.
Technical Specifications
| Battery Chemistry | LFP (LiFePO₄) |
| Nominal Voltage | 12.8V |
| Capacity | 30.0Ah / 384Wh |
| Peak Cranking Amps (5-sec pulse) | 752A |
| Pulse Discharge (10-sec) | 600A |
| Continuous Discharge Current | 300A |
| Reserve Capacity | 75 minutes |
| Dimensions (L × W × H) | 174 × 132 × 177mm (6.8" × 5.2" × 6.9") |
| Weight | 4.0 kg (9.0 lbs) |
| Terminal Type | Brass terminal block, M6 bolt |
| Polarity | Right-side positive |
| Recharge Voltage | 14.4V – 14.6V |
| Maintenance Charge Voltage | 13.8V |
| Charging Temperature | 0°C to 50°C |
| Discharge Temperature | −20°C to +60°C |
| Storage Temperature | −20°C to +60°C |
Australia Shipping:
- Under $500 → $19.95
- $500–$2,500 → $14.95
- Over $2,500 → FREE
- Bulky items → +$24.95 surcharge (waived over $2,500)
Fast dispatch from Brisbane. Same-day shipping on in-stock orders before 1pm AEST.
Change-of-mind returns: We accept returns within 7 days of delivery on unused, unopened products in original sealed packaging. Restocking fees apply (20–30%). Return shipping is the customer's responsibility.
No returns on opened audio gear, installed items, custom orders, or special-order products. Please check fitment carefully before installing.
Faulty or incorrect items: If you experience an issue, contact us with photos/video and your order number. We'll assess the claim and arrange repair, replacement, or refund for verified faults under the Australian Consumer Law.
Fitment assistance: If you're unsure about compatibility, reach out before ordering—we're happy to help.