Build the pack.
Your spec. Our welds.
Every value recalculates in real time: capacity, weight, range, peak current, price. When you're happy, add it to the cart and we'll start cutting nickel and joining cells.
Available space
Enclosure preset
Product page: /all-parts/enclosure/abs-enclosure-38x165x530mm
Length (mm)
Width (mm)
Height (mm)
best fit for your space
10S3P · Sony VTC6 · Murata
337 Wh · balanced score 0.700
Pick the cell
Geometry
series (voltage)
parallel (capacity)
not enough room for ESC / VESC — need at least 95mm free length after the pack, only 25mm available
pack 505×143×20 mm · space 530×165×38 mm · margin L+25 W+22 H+18 (pack 20mm / space 38mm)
serpentine · serie ↕ · 2-row snake · BMS in front
40 cells · 18650 · 10S4P
bmshow it works — 4 steps
01 · step
Enter your enclosure
Start with your board's enclosure: max length, width. The builder uses these constraints to automatically find the best layout: flat, 2-layer fold, serpentine or multi-row snake maximising capacity within the space available.
02 · step
Pick your cell
Four tested cells: Molicel P42A (21700, 4.2 Ah, 45 A), Molicel P50B (21700, 5.0 Ah, 50 A), Samsung 30Q (18650, 3.0 Ah, 15 A) or Sony VTC6 (18650, 3.12 Ah, 30 A). The builder shows which cell delivers the best Wh-per-euro inside your enclosure.
03 · step
Set S, P and BMS
If you want, choose 10S or 12S and 3–5P. Wh, max current, weight and price recalculate live. Then pick a BMS: charge-only 10 A or protection-mode 40–200 A. The builder places it inline or over the pack, whichever uses space more efficiently and includes it in the final pack dimensions.
04 · step
We build & ship
Each pack is hand-assembled in Italy: cells spot-welded with pure-nickel strip, BMS wired and heat-shrunk, then load-tested before shipment. We ship EU-wide; tracking included.