as much as you need
energy stone
Start with a single 24mm module, then add another Pack underneath when it gets longer. All modules are on the same 140 × 90 mm base; It sits on top of each other with magnets, looks like a single piece and works like a single device.
FRAGWATT family
as much as you need
energy stone
The Core carries all the electronics and a 97 Wh battery. Pack modules "click" under the Core with a magnet: the four N52 magnets in the corners align, the 12-pin pogo makes contact, the Core recognizes the new module in seconds. Each Pack has its own BMS. All with the same 140 × 90 mm base and 24 mm thickness: when stacked, it looks like one piece.
Colors
Three anodized,
monohull
The body is machined from a single piece of CNC aluminum and colored by anodizing: not paint, but the oxide layer on the surface of the metal colored. It is scratch resistant, disperses heat well, and has a fine sandblasted surface that does not retain fingerprints. Packs come in the same color as the Core.
Images were produced with physically based materials from FRAGWATT's 3D model; The anodizing tone may vary by several shades in mass production samples.
magnetic stack
Zoom in,
click, works
No wires, screws or apps required to add the Pack. Move the module under the Core: the magnets at the four corners automatically pull it into line, once in place the pogo pins make contact and the Core activates the new energy in seconds. Even when the laptop is running.
Four pairs of N52 neodymium magnets in the corners find each other in the last centimeter and pull the module into alignment. It cannot be installed upside down: the poles of the magnets arranged diagonally will repel each other in the wrong direction.
The magnets "click" the module into place at the last millimeter, and the 12-pin gold-plated pogo connector comes into contact. The slide lock secures the stack against shaking inside the bag.
The Core reads the Pack's BMS, softly charges the bus capacitors with the pre-discharge resistor, and turns the module on if the voltages are within 150 mV. New capacity appears in OLED.
| magnet | 4 pairs N52 neodymium, Ø5 × 1.5 mm, embedded in the body at the corners |
|---|---|
| connector | 12 pin pogo, 3 µm gold plated, 10 000 insertion cycles |
| lock | Sliding mechanical lock (magnet aligns, lock holds) |
| hot insertion | Supported: Pack FETs off without Core command |
| Addressing | Lane shift pogo: Packs identical, sequence automatic |
| flight | Stack is separated, each module separate 97.2 Wh backup battery |
- Which Pack first? It doesn't matter. Pack's are identical; Thanks to the lane shift in the pogo lines, the A closest to the Core sees the B channel below it.
- What if full and empty Pack are installed together? Packs cannot charge each other. During discharge, the fullest package operates first, and when the voltages are equalized, all of them work together; When charging, the emptyest packet is filled first.
- Risk of short circuit on pogo pins? The Pack's output FETs do not turn on without a command from the Core, and there is a 20 A fuse on the pogo line; There is no voltage on the exposed pins.
- Separate? Push the slide lock, slide the module to the side. Magnets hold but are easy to slide apart; You don't need to pull it off.
How does it work
three modes,
single box
FRAGWATT is connected to the laptop with a KX-Link cable and a plug suitable for your brand. The same port also works in reverse: it charges the laptop's own adapter FRAGWATT with 330 W via the KX-D terminal.
On the beach, on the train, on the LAN
The laptop operates at full performance without touching its own battery. The output stage is two-phase: 98.4% efficiency at 330 W, reducing to single phase at light load.
GaN instead of brick adapter
If an outlet is available, a palm-sized USB-C GaN charger carries the base load, handles the FRAGWATT peak moments, and charges itself at idle. With 240 W GaN, AAA gaming lasted 3 hours at full power.
USB-C or your own adapter
When the two are installed together, the Trio charges to 80% in 36 minutes. If left on charge for a long time, the desk mode keeps the cells at 65%.
what's inside
to 24mm
fits 330W
- 6 × Molicel P45B 21700 cells (6S1P, 97.2 Wh)
- Vertical 6-layer power board on front: dual-phase 330 W buck-boost, USB-C, KX-Link
- Vertical 4-layer BMS board on the back: AFE, shield FETs, BLE
- Copper busbars on the sides, 20 mm smart radial fan, OLED and light line
