Electric Vehicle Battery System
Runaway Prevention Device (RAD) Description and Operation
In this manual: Electric Vehicle Battery System
~1min read
Description
The RAD is installed on each battery module. If the high-voltage battery swells due to cell overcharging, the RAD cuts off the ground of the main relay and precharge relay. If a cell is overcharged, the switch turns OFF and the vehicle cannot be driven.RAD
10-Cell RAD
14-Cell RAD
RAD Wiring Harness
Operation
| Module | Normal | Failure |
| Current | ON (Connected) | OFF (Cut-off) |
| RAD | - | Lift Switch |
| High voltage | Normal | Cut |
| Phenomenon | Normal | Engine Start Failure and Warning Lamp |
| Diagram | |
|
Test yourself
A quick Kia Soul EV Owner's Manual quiz: every answer comes with an explanation and a link to the manual page.
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