Lithium3000 Portable Power Station | Mobile Dual Battery System
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The Lithium3000 is Flexopower's largest portable power station — a 2560Wh Mobile Dual Battery System built for serious overlanders, caravan and trailer owners, and anyone who needs high-capacity power for home, office or field use. With a 3000W pure sine AC output, expandable battery capacity up to 17.5kWh, true UPS functionality and built-in solar MPPT, the Lithium3000 is the most capable unit in the Flexopower ecosystem.
Fits perfectly in a trailer or caravan. When the trip is done, remove it and connect it to your home or office. Conveniently movable with an expandable pull handle and wheels.
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Lithium3000 Portable Power Station | Mobile Dual Battery System
About the Lithium3000 Portable Power Station | Mobile Dual Battery System
Technical Specifications
What's in the Box
Best Applications
Mobile Dual Battery System — With Two FlexoDrive DC-DC Units
The Lithium3000 supports up to two FlexoDrive DC-DC units simultaneously — delivering 640W of combined alternator charging while you drive. Each unit is installed by a qualified Flexopower installer. Engine On / Off Auto Sense detects when the engine starts and stops, automatically beginning and ending the charge cycle without any manual intervention. Monitor and control the system via the app.
Unlike a fixed dual-battery installation, the Lithium3000 moves with you — between vehicles, trailers, camp and home. Your power investment is not locked into one vehicle.
The FlexoDrive DC-DC unit is available through our qualified installer network only — not sold direct. Contact us to find a Flexopower installer near you.
For direct alternator charging without a DC-DC unit, see the Lithium2400 Portable Power Station | Mobile Dual Battery System – FLEXOPOWER ZA
Expandable Capacity — Up to 17.5kWh
The Lithium3000 supports up to six additional battery modules — each adding 2.5kWh — bringing total system capacity to 17.5kWh. This makes the Kalahari Expedition System a serious home backup, off-grid cabin or extended expedition power solution.
Additional battery modules are not included and must be purchased separately. Contact us for pricing and availability.
Why This System Works
- True plug-and-play — solar panel connects directly to the Lithium3000 via the FlexoLink cable. No wiring, no separate controller, no setup.
- 400W solar input delivers maximum daily harvest for high-consumption setups.
- Built-in MPPT in the Lithium3000 maximises solar harvest automatically.
- 20m Red / Black 4mm² cable designed for longer runs — correct cable spec for this panel and distance.
- Tilt legs angle the panel at 45° for optimal performance in winter or early and late sunlight.
- Expandable to 17.5kWh — grows with your power needs.
- Mounting bracket keeps the Lithium3000 secure while driving — no movement, no damage on rough terrain.
- Every component is individually warranted and supported by Flexopower directly.
What it powers
Per day, based on 5 peak sun hours
27 hours
50L compressor fridge
Runs your fridge all night — and the next
18 hours
Laptop
Full working day, twice over
82 charges
Phone charging
Never worry about your phone again
41 hours
LED camp lights
Light your camp for two nights
20 hours
CPAP machine
Sleep soundly, off-grid
3 boils
1400W kettle
3 morning coffees — every day
⚡ AC appliances (kettle, coffee maker) require a paired Flexopower power station with AC inverter output. Shown here paired with the Lithium1200.
All figures: 165W × 5 peak sun hours = 825Wh/day · 85% system efficiency · paired with Lithium1200
The Flexopower ecosystem
One ecosystem. Every use case.
FlexoSun
Sun Out. Power On.
Portable solar panels from 150W to 400W, engineered for overlanding, camping and off-grid use across Southern Africa. Two generations — shingled cell and new generation TOPCon. Teflon ETFE encapsulated.
FlexoCharge
Driving. Standing. Always Charging.
Power systems that either stay in your vehicle or move with you. FlexoDrive creates a portable dual battery system. FlexoBase remains in vehicle. All are 3-in-1 chargers: grid, alternator and solar.
FlexoLink
Panel in the sun. Park in the shade.
Engineered solar extension cables in 4mm² and 6mm². Available in 10m, 15m, 20m and 25m lengths. Connectors in series or parallel configuration. Ready made — no crimping, no assembly.
FlexoApp
Own Your Power. Control Everything.
The FlexoApp connects you to your FlexoDrive system — monitor battery levels, track charging and control your setup from anywhere. Available on iOS and Android.
What's included
Everything in the box
This is a pre-matched system — every component is selected and sized to work together out of the box.
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Lithium3000 Portable Power Station
2400Wh capacity with built-in FlexoDrive DC-DC. Direct alternator charging — no external unit required.
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Vehicle Mounting Bracket
Custom-designed to secure the Lithium3000 in your vehicle, trailer or canopy during transport. Built for corrugated 4x4 terrain.
Best for
Overlanding
3–10 day trips, remote campsites
Dual fridge
Fridge + freezer combo setups
Full camp load
Lighting, comms and devices
Drive to charge
Charges while you drive — no DC-DC install needed
Charging sources
- Alternator — built-in, no DC-DC required
- Solar — via FlexoSun 200W panel
- Shore power — where available
Complete system — all components included
Christoff Eilerd
GetOut, Go
Christoff Eilerd is one of Southern Africa's most respected overlanding filmmakers and expedition travellers. His show Get Out, GO! runs as a bi-weekly television series across Southern Africa and on YouTube, with an active Patreon subscriber community that follows every expedition in detail.
As Overland Bound Africa ambassador, Christoff is deeply connected to one of the largest overlanding organisations in the United States — giving Flexopower direct credibility in the global serious overlanding community. Featured in Overland Journal, Tracks4Africa and international overlanding press, his voice carries weight with the buyers who matter most.
Christoff and Flexopower have been working together since 2019 — he tests every Flexopower product on real multi-week expeditions across the continent and his hands-on field feedback goes directly into every product we make. He uses several Flexopower products as standard in his rig.
Frequently Asked Questions
What is the Lithium2400?
TheLithium2400is Flexopower's flagship Mobile Dual Battery System — a high-capacity portable power system with FlexoDrive Inside, designed as a flexible alternative to a traditional fixed dual-battery installation.
Can I charge it while driving?
Yes. The Lithium2400 supportsup to 30Avehicle charging. Connectsdirectlyto alternator. No interface or DC-DC required.
Can I replace the battery?
FlexoSun portable panels are available from 150W to 400W, in both shingled cell and new generation TOPCon technology. All panels are Teflon ETFE encapsulated and engineered for Southern African conditions.
Is it only for vehicles?
No. You can use it in a vehicle, trailer, caravan, at camp, at work or at home.
Who is it for?
It is ideal for overlanders, campers, caravan and trailer owners, field users, and customers needing high-capacity portable backup power.
Why is it attractive for installers?
Because it offers a simpler, cleaner and faster faster fitment path than many custom electrical systems.