This page is part of the ONYX Battery Guide
This post serves as a technical field guide to the ONYX 80V 45Ah battery used on the RCR platform.
The 80V 45Ah pack marks ONYX’s transition to a higher-voltage design, combining a modern high-current BMS, upgraded connectors, improved thermal stability, and stronger long-term durability under sustained load.
It is intended for riders using the stock ONYX configuration who want consistent behavior, larger safety margins, and a smoother day-to-day ownership experience than earlier battery generations provided.
The sections that follow cover system fundamentals, real-world electrical behavior, charging practices, operating limits, and long-term ownership considerations.
ONYX 80V 45Ah Platform Overview
The ONYX 80V 45Ah battery operates on a higher-voltage system than the original 72V RCR platform.
- Nominal voltage: 80V (22-series lithium configuration)
- Full charge: 92.4V (it is also normal to see ~91V when charging is intentionally limited for longevity)
- Mid pack: ~80V
- Empty: ~66V
The pack is built from lithium-ion NCA cells 21700 class and integrates a Bluetooth-enabled smart BMS designed for continuous high current operation.
ONYX 80V 45Ah Battery Management System (BMS)
The 45Ah pack uses a modern SuperPower smart BMS designed for high discharge current and automatic safety control.
The BMS is responsible for:
- Over-current protection
- Short-circuit protection
- Over-temperature protection
- Cell balancing
- State of charge tracking
- State of health estimation
- Automatic discharge port management
Typical continuous current capability:
200A+ (BMS-limited)
ONYX 80V 45Ah BMS App
What the App Shows
- Pack voltage
- Individual cell-group voltages
- Cell voltage delta (balance)
- Battery temperature
- Charge and discharge current
- State of Health (SOH)
- Error history
ONYX 80V 45Ah Cell Balance
| Delta | Range |
|---|---|
| 0.01–0.05 V | low variation |
| 0.05–0.10 V | moderate variation |
| 0.10–0.15 V | elevated variation |
| 0.15–0.30 V | high variation |
| 0.30 V+ | very high variation |
Connector & Discharge Behavior
The 80V 45Ah battery uses a QS8 anti-spark connector.
- Automatic discharge control
- No app configuration required
- No arcing on connection
- Rated for very high continuous current
ONYX 80V 45Ah Connecting the Charger
- Turn off the charger
- Plug the charger into the wall
- Turn on the charger
- Then connect the HIGO S824B / QS9 adapter to the battery
ONYX 80V 45Ah Charging Times
The 80V 45Ah platform ships with a 10A charger.
| Charger | 0 → 100% | 50 → 100% |
|---|---|---|
| 10A | ~6.3 h | ~4.5 h |
Charging to 90–91V instead of 92.4V significantly improves lifespan with minimal range loss.
ONYX 80V 45Ah Reading Battery Level
| Voltage | State |
|---|---|
| 92.4 V | Full |
| 80 V | ~50% |
| 66 V | Empty |
ONYX 80V 45Ah Temperature Guidelines
- Discharge maximum: 140°F / 60°C.
- Charge recommended: 40°F-105°F (4°C-40.5°C).
- Charge limits: 32°F-113°F (0°C-45°C).
- Rest 30–60 minutes after aggressive riding before charging.
ONYX 80V 45Ah Best Charging Practice
| Use Case | Voltage |
|---|---|
| Daily riding | 86–88 V |
| Long storage | ~82 V |
| Maximum range | 90–92.4 V |
ONYX 80V 45Ah Charge Cycle Multipliers
| Charge Level | Life |
|---|---|
| 92.4 V | 1× |
| 91 V | 1.5× |
| 90 V | 2× |
| 89 V | 3× |
| 88 V | 4× |
ONYX 80V 45Ah Voltage Sag
| Sag | Range |
|---|---|
| 4–9 V | lower sag range |
| ~12 V | elevated sag |
| 12–18 V | high sag |
| 18 V+ | very high sag |
ONYX 80V 45Ah Battery and Cell Voltage Chart
| Battery V | Cell V | Description |
|---|---|---|
| 99V | 4.50V | Thermal runaway risk |
| 97V | 4.40V | Thermal runaway risk |
| 94V | 4.25V | Rapid degradation |
| 92.4V | 4.20V | True 100% |
| 91V | 4.15V | Stock “100%” |
| 88V | 4.00V | ~80% |
| 82V | 3.70V | Storage level |
| 80V | 3.63V | ~50% |
| 72V | 3.30V | ~25% |
| 66V | 3.00V | Empty |
| 55V | 2.50V | Minimum |
| <55V | <2.50V | Damage occurs |
Battery Diagnostics
For diagnosing imbalance, voltage sag behavior, BMS activity, or determining whether the battery requires repair:
ONYX 80V 45Ah Final Notes
The ONYX 80V 45Ah battery is the most capable production battery ONYX has delivered for the RCR platform to date.
It brings together:
- Sustained high current delivery
- Predictable thermal behavior under load
- Stable long-term cell balancing
- Robust high-current connectors
- Mature, well-supported BMS software
With conservative charging targets and reasonable temperature control, owners can expect 25,000–35,000 miles of dependable service, with additional usable life remaining for lower-power riding beyond that point.