Best Cordless Transfer Pump (2026): 4 Battery Picks

Compare the picks

Specifications are manufacturer rated, as published on each listing and collected 22 October 2026. Where a listing contradicts itself, we trust the title and bullets and say so in the review.

How we scored them

Each pump is scored on performance (stated flow rate and power flexibility), build (stated materials and hose), value, safety and warranty. Only the DIYtoolifz 3.2 GPM states safety compliance, CSA and UL, so it is the only pick scoring above zero on safety. All four state a 1-year warranty.

Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.

What the listings tell you

We read 4 cordless transfer pump listings. Flow rates run 3.2, 5 and 6 GPM, hose lengths run 41 to 78 in, and adapter counts run 3 to 5. Three run on DeWalt 20V and Milwaukee 18V batteries, with two of those adding 12V options, while the keimi runs on AA batteries or USB. All four state auto-stop against overfilling, all four state a 1-year warranty, and only one states safety compliance.

Buying guide: the best cordless transfer pump

Flow rate

Flow is the headline number: 6 GPM on the DIYtoolifz A01, 5 GPM on the SHOWEEDILL, and 3.2 GPM on the DIYtoolifz 3.2 and the keimi. Higher flow means fewer minutes per fill, which matters most on big tanks in tractors, trucks, trailers, RVs and boats, where a slow pump turns a short job into a long one. For a mower or generator tank, 3.2 GPM is plenty and the pump runs longer per charge.

Power options

Three pumps run on the batteries already in many garages: DeWalt 20V and Milwaukee 18V, all sold as bare tool or tool only with batteries not included. If you own both platforms, either pump works; if you own neither, the battery purchase decides the real price. The SHOWEEDILL and the 6 GPM DIYtoolifz add 12V battery clamps, and the 6 GPM model also takes 12V vehicle outlets, so they work where tool batteries are dead or absent. The keimi skips tool batteries entirely for 2 or 4 AA batteries or USB power, which suits keepers who own no power-tool platform.

Bare tool economics

Three of the four pumps are sold as bare tool or tool only, with batteries not included. That is a saving if DeWalt 20V or Milwaukee 18V packs already live on your charger, and a hidden extra purchase if they do not. The keimi sidesteps the platform question with AA batteries or USB power, which most households can supply from a drawer or a phone charger. Price the batteries you lack before comparing the pumps.

Auto-stop and nozzles

Every pump here states auto-stop: a sensor that halts flow when the tank is full, with beep alerts on the SHOWEEDILL and the 6 GPM DIYtoolifz and an LED indicator on the SHOWEEDILL. The SHOWEEDILL and the 6 GPM DIYtoolifz pair auto-stop with a hand nozzle for manual control of any volume. The keimi’s sensor stops flow when liquid reaches it, but the listing stresses attended operation: keep the nozzle in position, monitor the tank and switch off after transfer.

Hose length and adapters

Hose reach decides which setups work: 78 in on the 6 GPM DIYtoolifz, 51 in on the SHOWEEDILL outtake and the keimi, 41 in on the DIYtoolifz 3.2 per its bullets, plus a 23 in intake on the SHOWEEDILL for deeper suction. Longer hose means the can stays on the ground while the nozzle reaches the tank, which is the whole point of the tool. Adapters run 3, 4 and 5 per pump, from 2.0 to 3.75 in, fitting most North American fuel cans. Check two things before buying: the adapter sizes against your cans, and on the 6 GPM model the 1.3 in pump body against a 1.4 in minimum can opening.

Safety and warranty

Fuel demands respect. The keimi listing states the rules plainly: use in a ventilated area away from heat, sparks and flames, and do not leave the pump running unattended. Only the DIYtoolifz 3.2 states safety compliance, CSA and UL; the others state none. All four state a 1-year warranty. Treat the adapters as mounts, not caps: both DIYtoolifz listings and the SHOWEEDILL note the adapter only holds the pump, so put the original cap back on for storing, moving or tipping the can.

Garage Fit Check

• Match flow to the tank: 6 GPM for big equipment, 5 GPM for trucks and mowers, 3.2 GPM for small tanks.
• Check your power: DeWalt 20V or Milwaukee 18V batteries for three pumps, 12V clamps or outlets on two of those, AA or USB on the keimi.
• Measure the can: adapters from 2.0 to 3.75 in, and the 6 GPM pump needs a can opening of at least 1.4 in.
• Plan for ventilation and attendance: ventilated area, away from sparks and flames, never left running unattended.
• Keep the original caps: adapters mount the pump but are not fuel caps, so cap the can before storing, moving or tipping it.

Frequently Asked Questions

What can you pump with these?

Gasoline and diesel on all four, plus oil on the SHOWEEDILL and both DIYtoolifz models, kerosene and water on the DIYtoolifz 3.2, and light oils on the keimi. None of the four is listed for anything beyond these fluids. Check the listing for your exact fluid before pumping anything unusual.

How does auto-stop work?

A sensor watches the tank and halts flow when it is full. The SHOWEEDILL and the 6 GPM DIYtoolifz add a beep alert plus an LED indicator on the SHOWEEDILL, and the keimi’s nozzle sensor stops flow when liquid reaches it. Auto-stop limits overfilling but does not replace watching the fill.

Do I need my own batteries?

For three of the four, yes: they are sold as bare tool or tool only and the batteries are not included, so factor a pack and charger into the real cost if you own none. They take DeWalt 20V and Milwaukee 18V packs you already own. The keimi instead runs on 2 or 4 AA batteries, not included, or USB power.

Will it fit my gas can?

Check the adapters: 3, 4 or 5 per pump, spanning 2.0 to 3.75 in across the group, made for North American fuel cans. On the 6 GPM DIYtoolifz, also check the can opening: the 1.3 in pump body needs an opening of at least 1.4 in.

Can I leave it running unattended?

No. The keimi listing states it plainly: do not leave the pump running unattended, use it in a ventilated area away from heat, sparks and flames, and switch it off after transfer. The same caution suits every fuel pump here.

Related: the best fuel transfer pump, the best oil transfer pump, the best fluid transfer pump and our engine and shop equipment hub.