Wire-Bonded 18650 Battery Modules

Lithium
Block™

1S×P modules in both energy and power configurations. Stackable, sensed, and air-cooled building blocks.

UN38.3 • IPC-6012 / IPC-A-600 Cl.2 • RoHS/REACH

Key Features

Wire-bonded 18650 modules with standardized 1S×P geometry and integration-ready interfaces.

Ultrasonic Wire-Bond Interconnect

Cell-level fusing on both anode/cathode for low resistance and fault isolation.

1S×P, Stackable Form Factor

Standard 25.5 mm bus-bar spacing for dense, scalable arrays.

Integrated Sensing

Conformally coated PCB with galvanically isolated 10kΩ NTC thermistors (β=3380 K, ±0.5%).

Integration-Ready Interfaces

M6 bus-bar studs (5.5 Nm, Loctite 243) and Molex 430450812 (mate 43025-0800).

Available Configurations

Standard configurations from 5P to 10P. Custom parallel arrays available for specific requirements.

5P Configuration

5 cells in parallel

EnergyPower
Energy Optimized
Voltage:3.6 V
Capacity:17.5 AhEnergy (M35A)
Max Current:50 A
Approx. Length:118.4 mm

6P Configuration

6 cells in parallel

EnergyPower
Energy Optimized
Voltage:3.6 V
Capacity:21.0 AhEnergy (M35A)
Max Current:60 A
Approx. Length:138.4 mm

7P Configuration

7 cells in parallel

EnergyPower
Energy Optimized
Voltage:3.6 V
Capacity:24.5 AhEnergy (M35A)
Max Current:70 A
Approx. Length:158.5 mm

8P Configuration

8 cells in parallel

EnergyPower
Energy Optimized
Voltage:3.6 V
Capacity:28.0 AhEnergy (M35A)
Max Current:80 A
Approx. Length:178.5 mm

9P Configuration

9 cells in parallel

EnergyPower
Energy Optimized
Voltage:3.6 V
Capacity:31.5 AhEnergy (M35A)
Max Current:90 A
Approx. Length:198.6 mm

10P Configuration

10 cells in parallel

EnergyPower
Energy Optimized
Voltage:3.6 V
Capacity:35.0 AhEnergy (M35A)
Max Current:100 A
Approx. Length:218.7 mm
Rating Note: Module currents reflect cell capability. Allowable current depends on your system (thermal path, busbars, wiring, duty cycle). Enforce limits with a properly calibrated BMS and validate at system level. Over-current can cause damage or safety events.
Integration Requirement: A pack-level fuse is mandatory. Size the main fuse <120% of the cumulative parallel module rating.

Need these built into a custom battery system? We can help.

Request Custom Configuration
Interactive Design Tool

Lithium Block™ Space Allocator

Configure module layout and see real-time enclosure dimensions for your battery pack. Drag to rotate — all dimensions include 10 mm wall clearance.

Module Type

Parallel Count

88 Wh · 157 mm tall

Layout

Modules per row6
Rows (side by side)2
Headroom above (mm)60

Options

Electrical Topology

12S7P · 84 cells

Legend

Lithium Block modules
6.3 mm aluminum brackets
BMS / controls headroom
Busbar tabs
Total modules
Envelope L×W×H
mm
Volume
L
Mass (modules)
kg
Topology
12S7P
Cells
84
Nominal Voltage
43.2V
Voltage Range
30.0 – 50.4V
Capacity
24.5Ah
Energy
1.06kWh
Continuous Discharge
3.0kW (70 A)
Continuous Charge
0.5kW (12 A)
Request a Quote

Drag to rotate · Scroll to zoom · Reset icon to restore view · Enclosure includes 10 mm wall clearance on all faces

See It In Action

Lithium Block™ manufacturing and module handling

Interconnect
Ultrasonic wire-bond
Cell-level fusing (anode/cathode)
Module Geometry
1S×P (5P–10P)
Standardized, stackable
Sensing
10 kΩ NTC
β=3380 K ±0.5%, isolated
Bus-bar Spacing
25.5 mm
Standard module pitch
Interfaces
M6×1 @ 5.5 Nm
Loctite 243 • Molex 430450812
System Envelope
≤ 500 VDC
UN38.3 • IPC-6012 / IPC-A-600 Cl.2
Inside the build

How Lithium Block is Made

Why ultrasonic wire-bonding, how it differs from tab/resistance welding, and what it unlocks in pack design.

Ultrasonic wire bonder in action laying down bonds on lithium block module
Step 1

Precision Ultrasonic Bonding

Our ultrasonic wire-bond process creates low-impedance connections on both anode and cathode. It enables compact packaging and acts as cell-level protection for localized fault isolation.

  • Ultrasonic frequency: 60kHz for optimal energy transfer
  • Controlled bonding force ensures consistent connection quality
  • Real-time monitoring validates each bond formation
High-resolution close-up of completed wire bond showing metallurgical connection
Step 2

Metallurgical Bond Formation

Each wire bond creates a true metallurgical connection through atomic-level diffusion between the aluminum wire and cell terminal. This process eliminates the need for solder or mechanical fasteners, resulting in superior electrical and thermal performance.

  • Contact resistance: <50 microohms per bond
  • Bond strength exceeds 15N pull force specification
  • Temperature cycling validated: -40°C to +85°C
Wide view of completed lithium block module showing multiple wire bonds in manufacturing fixture
Step 3

Production-Ready Module Assembly

The completed lithium block module features multiple parallel wire bonds that distribute current evenly across all cells. Our manufacturing fixture ensures precise positioning and consistent bond placement, enabling scalable production while maintaining the highest quality standards.

  • Parallel bond architecture maximizes current capacity
  • Automated quality inspection validates every connection
  • Production traceability ensures consistent performance
10 kΩ

NTC (β=3380 K ±0.5%)

Integrated, isolated temperature sensing

25.5 mm

Bus-bar spacing

Standard module pitch

5.5 Nm

M6×1 stud torque

Use Loctite 243

Applications

Lithium Block™ modules serve as building blocks for larger battery systems across diverse industries and applications.

Rapid Pack Prototyping

Fast path from concept to first article using standardized, stackable modules.

High-Current Sub-Modules (up to 350 A)

Power-optimized P28A variants for peak discharge and dynamic duty cycles. Standard (Al collector): up to 210 A. Performance (Cu collector): up to 350 A.

Segmented HV Accumulators (≤ 500 VDC)

Design compliant, serviceable segments with proper creepage/clearance and protection.

Downloads & Documentation

Complete technical documentation, CAD files, and integration guides for the Lithium Block™ platform.

Technical Datasheet

Complete specifications, performance data, and integration guidelines.

Download PDF

User Manual

Installation, operation, and maintenance instructions for safe handling.

Download PDF

CAD Library

STEP models and technical drawings for all configurations.

LV Connector Pinout

Housing: Molex 430450812 (mate 43025-0800). Crimp: 43030-0007.
Pin 1
VSENSE+
Voltage Sense +
Pin 2
THERM 5
Pin 3
THERM 4
Pin 4
THERM 3
Pin 5
VSENSE−
Voltage Sense −
Pin 6
COM
Common return
Pin 7
THERM 1
10kΩ NTC β=3380K
Pin 8
THERM 2
Integration Guidance

Main Fuse Estimator

Calculate a recommended main fuse rating for your Lithium Block pack configuration.

Main Fuse Estimator

Rule: main fuse < 120% of pack current rating
Pack Voltage
346V
Pack Capacity
16.8Ah
Pack Energy
5.81kWh
Pack Current Rating
210A
Recommended Main Fuse
250A
Limit: 251A (120% of pack rating)
Note: This is an estimate based on module ratings. Actual fuse sizing must consider system-level factors including thermal management, wire sizing, duty cycle, and safety margins. Always validate with your system design and consult relevant standards.

Lithium Block™ Bracketing System

Engineered mounting solutions that transform individual modules into production-ready battery systems with professional fit and finish

Lithium Block bracketing system showing professional module stacking with integrated cooling manifold
Production Ready

Professional Integration Made Simple

No custom fabrication required. Our bracketing system delivers OEM-grade assembly quality with straightforward installation.

Engineered for Excellence

Professional Installation

Clean, repeatable assembly with pre-engineered mounting points and alignment features for a factory-quality result every time.

Consistent Stack Tolerance

Precision-machined brackets maintain tight dimensional control across the entire module stack, ensuring proper electrical contact and thermal performance.

Integrated Cooling Manifold

Built-in airflow channels and fan mounting provisions enable forced-air cooling for high-power applications without custom fabrication.

Structural Protection

Robust aluminum construction provides impact resistance and strain relief for interconnects during handling and operation.

Optimized Thermal Path

Direct contact mounting and integrated heat dissipation features maximize thermal performance under continuous high-current operation.

Close-up view of Lithium Block bracket assembly showing precision mounting and alignment features

System Capabilities

8-25
Module Configurations
Pre-engineered for common pack sizes
±0.5mm
Stack Tolerance
Ensures consistent compression
Aluminum
6061-T6 Construction
Lightweight and durable

Reduces Assembly Time

Pre-engineered mounting solutions eliminate design iteration and custom fabrication, allowing you to go from modules to tested battery system in hours instead of weeks.

Professional Appearance

Clean lines, precision fits, and integrated cable management create a finished product that looks factory-assembled, which is critical for demonstrations, testing, and production systems.

Get Bracketing System Specifications

Download CAD models for your configuration or contact our engineering team for custom bracket solutions tailored to your application.

Lithium Block in Your Application

Lithium Block modules are the core energy storage element in every MonoLith system. Explore application-specific guidance for your domain.

Ready to Build with Lithium Block™?

Contact our engineering team to discuss your requirements and receive detailed specifications for your application.