MyChron Battery Care & Charging Guide

AiM MyChron Battery Care & Charging Guide

This guide explains how to care for, charge, and maintain the battery in your AiM MyChron 5 or MyChron 6. Written by Rex Harris — professional qualified radio engineer (ACMA/RSM certified) with decades of motorsport electronics experience — and Charlie Harris — national-winning kart racer, Canterbury University engineering student, and kart race engineer — at Harris Race Radios, the authorised NZ & AU importer and supplier of genuine AiM Sport products. Proper battery care ensures long life, reliable performance, and trouble-free race weekends.

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1. MyChron Battery Types

  • MyChron 5 — internal lithium battery, proprietary charging port, 3–4 hour charge time
  • MyChron 6 — upgraded high-capacity lithium battery, USB-C charging, 2–3 hour charge time

The MyChron 6 battery lasts significantly longer due to improved power efficiency and a larger capacity cell.

2. Charging Your MyChron

  • Use the official AiM charger or a quality USB-C charger (MyChron 6)
  • Charge until the battery indicator shows full before a race weekend
  • Avoid charging from a low-power USB port — use a wall adapter or high-power USB source
  • Do not leave on charge indefinitely — disconnect once full

Charging Times

Model Charge Time Connector
MyChron 5 3–4 hours Proprietary AiM port
MyChron 6 2–3 hours USB-C

3. Battery Life Expectations

Model Typical Runtime With Wi-Fi Active
MyChron 5 8–12 hours 6–8 hours
MyChron 6 12–18 hours 10–14 hours

A full charge should comfortably cover a full race day for either model. Charlie Harris charges his MyChron 6 the night before every race meeting — it has never run flat during a day’s racing.

4. Tips to Extend Battery Life

  • Lower screen brightness when not needed
  • Turn off Wi-Fi between sessions (download data, then disable)
  • Disable unused sensor channels
  • Keep firmware updated — AiM regularly improves power efficiency
  • Avoid storing the unit fully discharged
  • Store in a cool, dry place — heat degrades lithium batteries faster

5. Long-Term Storage

  • Charge to 50–70% before storage (not 100%, not 0%)
  • Store in a cool, dry place away from direct sunlight
  • Recharge every 2–3 months during off-season to prevent deep discharge
  • Do not store in a hot car or garage in summer

6. Battery Health Indicators

Signs your battery may need replacement:

  • Rapid discharge — battery drains in less than half the expected time
  • Unit shuts off unexpectedly during a session
  • Battery does not reach full charge indicator
  • Battery drains while powered off overnight
  • Swelling or deformation of the unit casing (replace immediately)

7. Troubleshooting

Issue Likely Cause Fix
MyChron won’t turn on Battery fully discharged Charge for at least 30–60 minutes before trying again
Battery drains quickly High brightness or Wi-Fi on Reduce brightness, disable Wi-Fi between sessions
Charging is slow Low-power USB source Use official charger or high-power USB wall adapter
Battery not charging Damaged cable or port Try another cable; inspect port for debris or damage
Unit shuts off mid-session Failing battery cell Contact Rex Harris at Harris Race Radios for battery replacement options

Frequently Asked Questions

How long does an AiM MyChron battery last?

The MyChron 5 typically lasts 8–12 hours per charge. The MyChron 6 lasts 12–18 hours. Both should comfortably cover a full race day. Wi-Fi use reduces battery life — disable it between sessions to maximise runtime.

Can I use any USB-C charger for the MyChron 6?

Yes — the MyChron 6 charges via standard USB-C. Use a quality wall adapter or high-power USB source for best results. Avoid low-power laptop USB ports as charging will be slow.

How should I store my MyChron over winter?

Charge to 50–70%, store in a cool dry place, and recharge every 2–3 months. Do not store fully discharged or in a hot environment — both degrade lithium battery life significantly.

My MyChron battery drains very quickly — what should I do?

First check Wi-Fi is disabled and screen brightness is reduced. If the battery still drains rapidly, the cell may be degrading. Contact Rex Harris at Harris Race Radios for battery replacement advice.

Related Guides

AiM MyChron NZ & Australia — Buying Guide & Full Product Range →

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