Table of Contents

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Assumptions

18650 Battery Assumptions

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Would need to step down the voltage to 12v which may introduce some losses.
Could not charge it off of the car

Battery Pack

Battery Spec 3S64P - (150 Ah)

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Parallel Cells to Get Capacity

80Ah/2.0Ah

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Configuration

Battery Spec

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Battery Spec 3S56P - (130 Ah)

Specification	Value
Nominal Voltage (3 x 3.7v)	11.1v
Max Voltage (3 x 4.2v)	12.6
Min Voltage (3 x 3.0v)	9v
Cells in Series for Voltage	3
Parallel Cells to Get Capacity 80Ah/2.0Ah	56
Total Cells Required	168

Specification	Details
Capacity	112-128.8 Ah
Cell Capacity	2.0-2.3 Ah
Cells	3x56=168 cells

Battery Capacities

https://docs.google.com/spreadsheets/d/1mlgodp0UQAi1QGu0aGxJdH-wnCkg5dZosCjmBs_kSDo/edit#gid=0

Rpackr Configuration:

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Because of the way the battery is put together, I'm going to set it up as 6 cells with 2 cells in series.

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The Plano 50 Cal Ammo Box will can hold this pack for a total of 150Ah ( 192 cells (about 150Ah).

Battery Management System

50A BMS

3Series 50A 11.1V/12V/12.6V BMS PCB Protection Board for 18650 Li-ion Battery Cell with Balance

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Features

Continuous Discharge Current: 50A
Momentary Discharge Current: 150A
Charge Voltage: 12.6V
Charge Current: 50A
Overcharge Detection Voltage: 4.28±0.025V
Overcharge Protection Delay: 0.5S
Overcharge Cancel Voltage: 4.08±0.1V
Balance Detection Voltage: 4.20±0.025V
Balance Cancel Voltage: 4.20±0.05V
Balance Current: 60±5mA
Over-discharge Detection Voltage: 2.8±0.1V
Over-discharge Detection Delay: 0.1S
Over-discharge Cancel Voltage: 3.0±0.1V
Overcurrent Detection Voltage: 150mV
Overcurrent Detection Delay: 9mS
Overcurrent Protection Current: 200±10A
Protection Cancel Condition: Disconnect Load
Short Circuit Protection Condition: Outside Load Short Circuit
Short Circuit Detection Delay: 250uS
Protection Cancel Condition: Disconnect Load
Main Circuit Conduction Internal Resistance: ≤25mΩ
Working Current: ≤30uA
Sleeping Current(Battery Over-discharge): ≤10uA
Operating Temperature:﹣30℃~﹢80℃
Size: 75×51.5×15mm/2.95×2.02×0.59"

Test Results of Batteries

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100A BMS

3Series 50A 11.1V/12V/12.6V BMS PCB Protection Board for 18650 Li-ion Battery Cell with Balance

Battery Hookup Modem Batteries

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Almost every pack we opened had the light blue lg cells, some had dark blue lg cells with the same specs. Either way they are all name brand cells, the best ones out there

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