Aviation accessories
Sporty's Electronic E6B Flight Computer battery
3 × 1.5V alkaline cell
How to replace it
| How to open | Install three 1.5V AAA batteries in the compartment on the top rear of the computer. Align polarity correctly. |
|---|---|
| Orientation | Observe polarity marks |
| Notes | Sibling trap vs ASA CX-3: Sporty's uses 3× AAA; CX-3 uses 4× AAA. |
| Access | Tool-free |
Important
- Uses 3× AAA — not 4× AAA like ASA CX-3.
Sources
Helpful for this device
Optional tools for opening, testing or charging — separate from the battery answer.
- Panasonic eneloop AAA (LSD NiMH)
Replacement AAA cells when the device accepts NiMH
- Panasonic eneloop BQ-CC55 charger
Everyday NiMH AA/AAA charging (eneloop ecosystem)
- Battery tester
Quick good / low / dead check for household cells
New battery but still not working?
A fresh 3 × AAA should restore Sporty's Electronic E6B Flight Computer if the battery was the problem. Work through the checks below before replacing the device.
- Check orientation
Confirm the cell is seated correctly: Observe polarity marks
- Check the battery type
This device needs 3 × AAA (alkaline). Rechargeable cells are only suitable when the manufacturer accepts that chemistry — set battery type in device settings if available. Same size does not always mean the same battery.
- Check known model-specific issues
Uses 3× AAA — not 4× AAA like ASA CX-3.
- Confirm the battery itself
If you have a battery tester or multimeter, check the cell. A low open-circuit voltage often means replace; for rechargeable AA/AAA, a capacity test is more informative than voltage alone.
- Still not responding?
If a correct, fresh battery installed properly does not restore the device, the fault may be elsewhere — the device may need service or replacement.