Buying a Used Mobile Robot: What to Ask About Its Battery and Shipping

A used mobile robot listing may say that a battery is included, but that sentence leaves several practical questions open. The buyer needs to know which battery is offered, what evidence exists about its condition and who will arrange transport. A short demonstration run can be useful, yet it does not by itself establish remaining service life or certify that a battery can be shipped.

Identify what is included in the sale

Ask whether the stated battery is installed in the robot, supplied separately or excluded from the offer. Request the manufacturer's identification, model and any relevant documentation that the seller is authorized to share. A charger, charging dock, cable or software access may be a separate item; list each item in the order rather than assuming that a complete charging setup is included.

A battery label and a sales description answer different questions. The label may help identify a product, while a seller's statement describes what is being transferred. If a battery has been replaced, record which unit is present at inspection and which will be delivered. Do not publish serial numbers or sensitive operational data unnecessarily.

Ask for evidence without inventing a health score

Request the maintenance history available to the seller, including known replacements, manufacturer notices and the conditions under which any runtime test was performed. A demonstration lasting a particular time under a light load does not establish runtime for a different route, payload or operating environment. A percentage displayed by one management system may also require the manufacturer's explanation before it can be compared with a percentage from another system.

If information is absent, write “not provided” rather than assigning a remaining capacity or predicting a replacement date. A qualified technician may be needed to interpret diagnostic information and assess the specific equipment. The buyer and seller should agree on which observations are required before acceptance and what happens if information cannot be verified.

Document visible concerns and stop assumptions

Damage, swelling, leaks, unusual heat or a manufacturer's recall notice require attention under the applicable safety procedures. The observer should report what was seen, when and by whom, without diagnosing a fault or attempting to open the battery. If there is an immediate danger, follow the site's emergency procedure and contact the appropriate emergency responders.

The US Federal Aviation Administration explains that lithium batteries can present transport safety risks and provides resources on damaged lithium batteries in cargo. Its guidance relates to lithium batteries and air transport; it should not be generalized to every battery chemistry, transport mode or jurisdiction.

Separate a sale from a transport decision

Before arranging shipment, tell the responsible shipper and carrier whether the battery is installed, packed with equipment or offered separately, and disclose any known damage or recall. The correct classification, packaging and permitted transport mode depend on the battery and route. A sale agreement does not authorize an untrained person to package a potentially hazardous battery.

The FAA's interactive lithium battery shipping guide provides awareness of air transport requirements and notes that carriers may be more restrictive. It is not a replacement for the regulations or training. For international movements, confirm the rules for the actual route and mode with a qualified dangerous-goods specialist and the carrier. Do not rely on an old listing or a generic article as a shipping approval.

Agree on responsibilities at handover

Record who provides documentation, who arranges assessment, and whether shipping is included in the price. Establish a way to resolve a mismatch between the described and delivered battery. If the seller cannot provide requested history, the buyer can decide whether to seek additional assessment, renegotiate the terms or decline the purchase; the article does not determine which choice is appropriate.

Keep any test results together with the device identity and test conditions. If a unit arrives damaged or warmer than expected, do not treat the delivery checklist as complete merely because the robot itself is present. Follow the recipient's approved procedures and consult the manufacturer or qualified personnel before use.

Keep the decision proportional to the evidence

For example, a hypothetical warehouse robot may be advertised with its original battery and a charging dock. A buyer could verify the listed items, ask for available service records and obtain carrier advice for the proposed route. None of those steps alone proves the battery's future runtime. They provide a clearer basis for deciding what else needs to be checked.

For related transaction questions, read our articles on the limits of an acceptance witness and warranty and support questions, or browse the robot trading section. This article is informational and does not replace the equipment maker's instructions, a professional inspection or applicable transport requirements.