Battery swaps are easier than you think on most robot vacuums.
Most popular robot vacuums have replaceable batteries, and the swap takes about five minutes with a screwdriver.
iRobot Roomba models (like the 600, 800, 900 series, and newer i/j series) are the easiest — the battery just slides out once you remove a few screws on the bottom. No soldering, no prying. Same goes for Roborock (S4, S5, S6, S7 series) and Dreame (D9, L10 Pro). You undo a handful of Philips head screws, unplug a connector, swap, and plug back in.
Neato is also straightforward — battery is under the left wheel, held by two screws. Ecovacs Deebot models are similar.
The tricky ones are the budget bots like the Eufy G30 or older Chinese no-names. Some models have the battery tucked under a glued-down circuit board or soldered directly. That’s not impossible, but you’re in surgery territory.
Before you buy a replacement, check if the battery is listed as “user replaceable” on the product page, or look for a teardown video. If the video involves a heat gun, walk away.
**If you’re worried about battery life, just pick a model where the battery comes out without dismantling half the bot — it’s the difference between a five-minute swap and a Saturday afternoon