Power States
The Bass50 has three power states:
On – Normal use. Power draw depends on output level.
Standby – Reduces power by disabling certain features while staying discoverable in the Trulli App. Auto-activates after 20 minutes of no playback (configurable in-app).
Off – Completely shut down. Hold the Trulli Button for 2 seconds to power back on.
Battery Overview
At the heart of the Bass50 is a removable, high-capacity lithium iron phosphate (LiFePO₄) battery, selected for its exceptionally long life, thermal stability, and reliable energy delivery.
Voltage: 16 V
Capacity: 172.8 Wh
Config: 5s3p LiFePO₄
Weight: 3.7 lbs
Lifespan: >2500 discharge cycles
Required for operation: Yes
It installs easily with no tools and can be swapped for charging, replacement, or transport.
An internal backup battery keeps the Bluetooth system on standby for up to 4 days, allowing remote power-on via the Trulli App.
Battery Status Indicators
You can check battery level three ways:
Trulli App: Displays 8 bars with visual color cues. Low battery triggers alerts and may turn the Trulli logo red.
Bass50 LED Ring: Tap the + or – button. The ring lights from left to right to indicate level.
On the Battery: Press the LED button on the battery housing to check charge status.
Expected Runtime
Runtime varies by volume, EQ, and environment:
~4 hours at full volume
~20 hours at moderate volume
~40 hours at low volume
With a Trulli Wall Charger or 12V Vehicle Charger, playtime is fully continuous.
Charging Options
The Bass50 can be charged in three ways:
Wall Charger (Included)
Input: 100–240 V AC, 50–60 Hz
Output: 24 V DC, 7.5 A
Charge time (off): ~2 hours
Indicator: Trulli Button pulses white while charging, solid when full
Certifications: UL Recognized, EMC & Safety compliant
Vehicle Charger (Included)
Output: 12.4–16 V DC (10A fuse)
Charge time: ~2.5 hours
Smart Detection: Only charges if vehicle voltage ≥12.4V to prevent draining the car battery
External Battery Charger (Sold Separately)
Input: 90–264 V AC, 47–63 Hz
Output: 18 V DC, 3.9 A
Charge time: ~3 hours
Certifications: UL Recognized, EMC & Safety compliant
To reinstall battery: align and slide until it clicks
Battery Removal
Twist fasteners on the cover counterclockwise
Slide battery out in the indicated direction
Do not lift up while still connected—this may damage the connector
Charging & Operating Temperatures
Charging: 32°F to 140°F (0–60°C)
Operating: -4°F to 140°F (-20–60°C)
If the battery is outside these ranges, charging will pause, or the system may shut down until it’s safe to resume.
Long-Term Storage Tips
Remove the battery if storing long-term
1 Month: -4 to 110°F (-20–45°C)
3 Months: -4 to 95°F (-20–35°C)
6 Months: -4 to 77°F (-20–25°C)
Store at ~50% charge in a cool, dry place
Avoid storing fully depleted
Battery Safety Guidelines
Only use official Trulli charging accessories
Keep battery away from water, heat, and impact
Do not open or modify the battery
Air Travel: If required, remove the battery and carry it onboard
Final Notes
The Bass50’s battery system is built for real-world performance—from long festival days to off-grid adventures. For maximum battery health, monitor charge levels in the app, follow safe charging practices, and store it wisely when not in use.
Let the music play. You’ve got the power.