8 Best Roomba Replacement Batteries to Buy in 2025

Punchy and practical, this 14.4V Li-ion 3300mAh (48Wh) pack breathes new life into aging Roombas from the 500 through 900 series. The broad compatibility—down to part code 4376392 / 1800LI—means fewer headaches for owners juggling multiple bots. Its low self-discharge and easy activation tip (dock for 3 minutes) help solve the common pain point of batteries that won’t wake after deep discharge.

In testing with Roomba 675 and Roomba 960, the battery delivered consistent runtime suitable for small to mid-size homes, maintaining strong suction without sudden drop-offs. The 14.4V profile aligns with OEM requirements, and the 3300mAh capacity is a meaningful bump over many stock packs. It handles routine debris on hard floors and low-pile rugs well; as with most packs, heavy carpet boosts draw and trims runtime.

Compared with the VANPIR 3300mAh Li‑ion, performance feels similar, but this unit’s clear activation guidance reduces user error. Against the Powerextra 5000mAh Ni‑MH, you trade some peak runtime for lighter weight and better calendar life. Ideal for users wanting OEM-like behavior without the OEM cost, it offers a stronger features-to-performance balance than the iRobot 1800mAh pack.

Value-packed and straightforward, this 14.4V 4500mAh Ni‑MH replacement is built for shoppers who want reliable runtime on a tight budget. It includes two bonus side brushes, turning a battery swap into a light tune-up. The built‑in protections for overcharge, over‑discharge, and short circuit address common failure modes in older R3 bots.

In real use across Roomba 650 and 770, the higher 4.5Ah capacity stretches cleaning cycles, especially on hard floors. Ni‑MH chemistry does fine with daily top-offs, though it’s heavier and may show slightly more voltage sag on thick carpet. Installation is tool‑free, and the pack’s protective circuitry kept charge errors at bay in our cycles.

Stacked against Powerextra’s 5000mAh Ni‑MH, this one gives slightly less runtime but throws in accessories. Compared with POWTREE’s 6400mAh Li‑ion, you’ll sacrifice longevity and weight savings for a notably lower buy‑in. Best for older 500–700 owners wanting maximum runtime per dollar and who don’t mind Ni‑MH’s weight.

Built for endurance, this 14.4V 6400mAh Li‑ion pack from POWTREE is a runtime monster for R3 Roombas. The chemistry offers no memory effect and low self-discharge, so it’s ready after weeks on standby. Certifications (ISO9001, CE, RoHS) and a solid warranty round out the pitch for heavy users.

In Roomba 980 and 960 runs, it sustained long sessions across hard floors and medium carpet without the mid‑cycle fade seen in many Ni‑MH packs. The capacity boost shines in multi‑room condos and single‑level homes where uninterrupted passes reduce recharge cycles. As with any high‑capacity pack, ensure firmware and dock are healthy to avoid charge errors.

Versus the Upgraded 3300mAh Li‑ion, POWTREE trades some portability for dramatically longer sessions. Compared to Tenergy’s 4500mAh Ni‑MH, it’s lighter, holds voltage better under load, and needs fewer recharges over time. Ideal for large spaces or pet homes needing maximum uptime, it delivers a superior features-to-performance ratio than the OEM 1800mAh unit.

Sleek and efficient, the VANPIR 14.4V 3300mAh (48Wh) Li‑ion hits a sweet spot of runtime, weight, and broad compatibility. Rated for ≥500 cycles and claiming 80% capacity retention after 1000 charges, it targets users fed up with rapid degradation. The low ~1%/month self-discharge is a real perk for weekly cleaners.

On Roomba 671 and 890, it delivered reliable cycles across laminate and low‑pile rugs with minimal voltage sag. The pack is sensitive to deep discharge when using third‑party docks; keep at least 10% remaining to avoid activation hiccups. Safety certifications (CE/FCC/RoHS) and stable current output made runs predictable.

Compared to the Upgraded 3300mAh Li‑ion, performance is neck‑and‑neck; VANPIR’s cycle-life claims may tip it for heavy users. Against Powerextra’s 5000mAh Ni‑MH, you trade some absolute runtime for lighter weight and better shelf stability. It’s a strong value Li‑ion for owners who want dependable daily cleaning without chasing the biggest capacity.

This 14.4V 5000mAh Ni‑MH from Powerextra prioritizes stamina for older R3 Roombas, especially 500–700 models. It features safeguards for overcharge, over‑current, and short circuit to reduce charge‑error headaches. For users wanting familiar Ni‑MH behavior with extra capacity, it’s a pragmatic upgrade.

In Roomba 650 and 770 tests, runtime exceeded standard packs, particularly on hard floors and mixed surfaces. The heavier Ni‑MH chemistry can show more sag on thick carpets, occasionally prompting earlier dock returns under heavy load. A published ‘charge error fix’ is useful if your bot throws the common battery error after installation.

Versus the 4.5Ah Ni‑MH budget pick, you get a bit more endurance with similar simplicity. Compared with POWTREE’s 6400mAh Li‑ion, it’s heavier and less efficient but friendlier for users sticking with Ni‑MH habits. Best for older bots whose owners want longer sessions without moving to Li‑ion.

Purpose-built for newer bots, this ABL‑D1/D2 14.4V 1800mAh (26Wh) Li‑ion targets the Roomba i and e Series—including i3/i4/i7/j7 and e5/e6. It includes multi-layer protections (over‑current, over‑voltage, over‑temp) and matches the OEM spec for predictable charge reporting. For owners struggling with i‑series ‘replace battery’ warnings, it’s a direct drop‑in.

In iRobot Roomba i3+ and j7 runs, it provided standard cycle lengths suited for apartments and small homes. The pack’s guidance to avoid deep discharge (keep above 5–10%) is important for maintaining health and preventing lockout on third‑party docks. With up to 500 recharge cycles, it aligns with OEM endurance expectations.

Compared with generic R3 batteries, this is the correct chemistry and form for i/e series, while others won’t fit. Against the official iRobot 1800mAh pack, you get similar capacity with broader availability and support. Ideal for i/e owners wanting OEM-like behavior without extra frills; it balances features well compared to VANPIR’s 3300mAh, which won’t fit these models.

Tenergy’s 14.4V 4500mAh Ni‑MH aims at users wanting a trusted brand with extras. The kit includes a brush cleaning comb and four side brushes, making maintenance easier post‑installation. It’s a straight swap for many R3 models and some legacy Discovery/Dirt Dog units.

In Roomba 650 and 880 runs, the 4.5Ah capacity extended cycles on hard flooring, with predictable taper near end-of-charge. Ni‑MH’s weight is noticeable, and thick carpet can induce mild voltage sag, but safety and stability were solid over repeated cycles. Charging behavior was consistent across OEM docks.

Compared with the 4.5Ah budget battery, Tenergy adds brand backing and more accessories. Against Powerextra’s 5.0Ah Ni‑MH, you give up a bit of runtime for the stronger accessory bundle and support. It’s a smart pick for users who want all-in-one maintenance value without moving to Li‑ion.