Now taking enquiries — Aotearoa NZ

Battery packs, built to spec.

Custom lithium-ion packs for ebikes, conversions, and one-off builds. Every cell tested, every pack matched to the ride you're actually building — not the one a catalogue assumed.

Pack spec SPEC-0148
Configuration52V 20Ah
Energy1040 Wh
Cell21700 · Molicel P42A
BMSSmart, 40A cont.
Est. price$1,540 NZD
Example build shown for illustration. Configure your own below.
Who it's for

Three ways people come to us

Most ebike packs are proprietary and expensive to replace. We build the alternative — matched to your bike, your battery bay, and your range needs.

Ebike replacement packs

Your OEM pack has degraded or the manufacturer's gone quiet on parts. We rebuild to the original form factor and voltage, often with better cells than it shipped with.

Custom builds

DIY ebikes, conversions, e-mtb, mobility scooters, cargo trikes. Tell us your motor, controller, and space constraints — we spec the pack around it.

Small fleet & commercial

Rental fleets and delivery operators needing consistent, swappable packs across multiple bikes, with matched cycle life and capacity.

Prebuilt range

Standard packs, ready to spec

Starting prices for our common configurations. Final price depends on connector, enclosure, and cell grade — confirmed at quote.

Commuter

36V 14Ah

504 Wh · 18650 cells · ~3.1kg
From$899 NZD
Request this pack
Trail

48V 17.5Ah

840 Wh · 21700 cells · ~4.3kg
From$1,249 NZD
Request this pack
Long range

52V 20Ah

1040 Wh · 21700 cells · ~5.2kg
From$1,549 NZD
Request this pack
Performance

72V 30Ah

2160 Wh · 21700 cells · ~9.6kg
From$2,899 NZD
Request this pack
Cost estimator

Configure a build, see a ballpark

This gives a rough estimate based on typical cell and BMS pricing — not a final quote. Submit the result below and we'll confirm exact pricing for your build.

Nominal voltage48V
Capacity15 Ah
5 Ah35 Ah
Cell grade
Enclosure
Estimate only — based on typical NZD/Wh cell pricing plus BMS, wiring, and labour. Actual quotes vary with connector choice, cell availability, and lead time. Confirm before ordering.
Your build SPEC-EST
Configuration48V 15Ah
Energy720 Wh
Cell gradeStandard
Est. weight3.8 kg
Estimated price$1,120 NZD
Ballpark estimate. Not a final quote.
Send this build for a real quote
Process

How a build actually happens

01

Enquire

Send your bike, motor, or project details through the quote form or estimator.

02

Spec confirmed

We confirm voltage, capacity, connector, and cell grade, and lock in a firm price.

03

Build & test

Cells matched and tested, pack assembled, BMS configured, capacity verified.

04

Ship or collect

Delivered compliant with battery transport rules, or ready for pickup.

Get in touch

Request a quote

Tell us about your bike or build. We'll come back with a firm price and lead time.

Thanks — your email app should have opened with your enquiry drafted. Send it through and we'll reply within a couple of business days.

Before you send

  • Photos of your current pack or bike help a lot
  • Include your motor's peak current draw if known
  • Custom enclosures may add to lead time
  • We'll always confirm compliance before shipping

Prefer to just call or text?

027 263 8020
Blake.r.mccallum@gmail.com