Charge it, then unplug it
Robots #1, #3 and #4 run on a battery. Do not run poses while the charger is plugged in. Sixteen servos moving pull more current than the charger can give, so the pack charges and discharges at the same time.
Repair costs · Hiwonder batch
Still being worked on. It gets a price once it is finished.
Still being worked on. It gets a price once it is finished.
Still being worked on. It gets a price once it is finished.
Still being worked on. It gets a price once it is finished.
Still being worked on. It gets a price once it is finished.
Still being worked on. It gets a price once it is finished.
| What was done | What it looks like if it comes back | Cover | Why |
|---|---|---|---|
| New part fittedRobot #5 power socket and switch | The hand does nothing at all. No lights and no movement when you switch it on, the same as when it arrived. | 6 months | A new component, correctly fitted. |
| Rewiring, calibration, reassemblyEvery robot worked on | It moves, but it stands wrong. A joint sits at an angle it should not, or the robot leans, or it drifts back off centre after being set. | 6 months | Workmanship, with no new part involved. |
| Rebonded gearRobot #3 servo 2, Robot #1 servo 7 | The joint still moves when told to, but gives way under weight. The foot or the arm returns to the same wrong position every time, and setting it again does not hold. | 6 months | The gear was rebonded because no replacement servo was available. It works and it was tested, but it is a repair, not a new part. If it slips again inside 6 months the labour is free. |
| BatteriesEvery pack | The robot switches itself off part-way through moving, or the charger shows green while the robot still cuts out under load. | 6 months | Cell quality varies. A cell can test well at first and still turn out weak, but it should not fail inside 6 months. |
Robots #1, #3 and #4 run on a battery. Do not run poses while the charger is plugged in. Sixteen servos moving pull more current than the charger can give, so the pack charges and discharges at the same time.
Robot #3's cell 2 reads 3.692 V against 4.13 and 4.14 in the other two. Nothing has failed and the robot walks fine. That cell is weaker than its neighbours and will likely need replacing before them. It is measured and dated here, and it is not part of this repair.
If a repair needs looking at again, send the robot together with the next batch coming in for work rather than on its own.
Scope. Six Hiwonder robots, received 13 August 2026. Work started on them before any price was agreed, which suited us both at the time. This page sets out what that work came to.
Payment. This is a quote, not an invoice. Every figure here is open to discussion and nothing is fixed until we agree it between us.
Warranty. 6 months on everything. New parts fitted, labour, repairs, calibration and batteries. Rebonded gears on Robot #3 servo 2 and Robot #1 servo 7 carry 6 months on labour only, for the reason given above.
Not covered. Faults in parts not worked on. Impact, liquid or misuse. Work by others. Normal battery wear, which is roughly 150 to 700 charge cycles depending on how hard a pack is worked. Robot #3's cell 2 is measurably weak and is expected to need replacing. This is recorded and is not part of the repair.
Condition on arrival. How each robot arrived is recorded and dated in the report. Please confirm you have read it.
Shipping. A robot goes back as soon as it is repaired and tested. If something needs to come back under warranty it travels with the next robot due in for work where there is one, and we arrange it separately where there is not.