8 Best Roomba i3 Battery Replacements to Buy in 2025

Punchy and reliable, the VANPIR ABL-F drops into your Roomba i3/i3+ with a true-to-spec 14.4V, 4460mAh pack and delivers extended sessions without tripping protection. It’s UL/CE/FCC/RoHS-certified and supports ≥500 cycles, addressing the biggest i3 owner headache: shorter run times as OEM packs age. Compatibility spans e/i/j series, so mixed-household owners can share one spare across multiple bots.

In testing with carpets and hard floors, the VANPIR maintains a steady discharge curve, helping iRobot’s cleaning algorithms avoid premature docking. Expect noticeable gains versus tired stock batteries—especially on multi-room runs—while dimensions align with the ABL-F footprint for a clean swap. The current rating prioritizes stamina, though ultra-long homes might still require a mid-clean recharge cycle.

Compared with the budget 3.5Ah pack (B0CX7N19LN), VANPIR’s higher capacity and tighter quality control translate to fewer ‘return-to-base’ prompts. Against the Lcenerga 5600mAh (B0DS9SSLBL), you trade a bit of runtime for proven compatibility breadth and certifications. It’s ideal for i3 owners wanting a strong upgrade without going extreme, offering a better features-to-longevity balance than the Best Budget option.

If you need a quick, affordable fix for a fading Roomba i3 battery, this 14.4V, 3.5Ah pack hits the essentials without fluff. It claims up to 60 minutes runtime, enough for most small to mid-size apartments to finish a cycle cleanly. The build includes a power management system to prevent overheating and overcharge, easing worries about longevity.

In day-to-day runs, it delivers stable power on hard floors and area rugs, with fewer pauses than old OEM packs nearing end of life. Heavier carpet loads may trim runtime, and multi-level homes might require a second charge. Fast charging via the standard dock works as expected, and installation is straightforward.

Compared to VANPIR’s 4.46Ah and Lcenerga’s 5.6Ah options, this pack trades endurance for cost-efficiency and lighter weight. It suits renters, secondary robots, or anyone testing whether a battery swap rescues performance. Feature-for-feature, it offers a practical runtime uplift at a lower entry point than the Best Overall pick.

The Lcenerga ABL-F is a powerhouse upgrade for Roomba i3 owners craving the longest runs, packing a massive 5600mAh (80.64Wh) at 14.4V. Grade-A cells and built-in circuit protection give it the stamina to tackle multi-room houses and thicker carpets without constant docking. It lists support for e/i/j series, including i3/i3+ and i7/i7+, giving households flexibility.

In real use, the higher capacity translates to fewer mid-clean top-ups, especially helpful in homes with pets and dense debris. The discharge remains consistent under load, extending suction time at peak performance. It’s heavier than smaller packs, and full recharge can take longer, but the trade-off is sustained cleaning.

Against VANPIR’s 4.46Ah pack, Lcenerga pushes runtime noticeably further, making it a fit for large floor plans. Compared with the budget 3.5Ah unit, it’s a different class—in power, protection, and endurance. For users prioritizing long, uninterrupted sessions, this is the endurance leader, albeit with more weight than the mid-range option (B0FG2F6NKZ).

This morpilot 14.4V, 3200mAh pack is the ‘just right’ choice for Roomba i3/i3+ users seeking a balanced upgrade. It adds an adaptive chip for stable current/voltage and claims up to 1000 cycles, improving reliability over tired stock packs. Safety certifications and an intelligent protection system keep your robot safe during charging and use.

During testing on hard floors and medium-pile carpets, it provides solid, consistent output suitable for standard single-level homes. The capacity won’t match 4.5–5.6Ah competitors for marathon runs, but it’s lighter and recharges quicker. Drop-in installation is straightforward, and it behaves like OEM in docking and runtime estimation.

Compared with the VANPIR 4.46Ah, you trade some endurance for a lighter, nimble feel and strong safety features. Stack it against Lcenerga’s 5.6Ah, and the morpilot becomes the practical daily driver for average homes. For most i3 owners, it strikes a smart balance of performance, weight, and longevity versus the Longest Runtime pick.

For hands-on DIYers, this ABL-D2 stands out with included tools and a clear fit for i3/i3+ and sibling models, running at 14.4V, 2800mAh. Despite the modest capacity, the brand touts at least 60 minutes per charge thanks to efficient power management. It’s UL/CE/FCC/RoHS certified and ships with two screwdrivers and instructions—ideal for first-time battery swaps.

In practice, it’s best for smaller homes and maintenance cleans, performing well on hard floors and low-pile rugs. Heavy carpet or pet-mess marathons will stress the lower capacity, potentially prompting earlier returns to dock. Built-in protection against overcharge and overheat adds peace of mind during fast turnarounds.

Versus the budget 3.5Ah unit, this one emphasizes safer install and tooling, not raw endurance. Compared with VANPIR and Lcenerga, runtime is shorter but installation support and compatibility breadth are strong. It’s a smart pick if you value ease-of-replacement and safety extras over maximum runtime, landing more utility than the Lightweight Everyday option for first-time installers.

Light and simple, the ABL-D1 is the minimalist solution for Roomba i3 battery replacement, rated at 14.4V, 1800mAh. It’s compatible with i3/i3+ and broader e/i/j families, making it a flexible spare for occasional use. The brand suggests a conditioning routine on first use to optimize lifespan.

In the real world, this battery suits small apartments, spot cleaning, or backup duties when your main pack recharges. Runtime is the shortest in this group, so multi-room homes will likely need mid-clean docking. That said, the lower capacity keeps weight down and charging times quick.

Compared with the Best Budget 3.5Ah model, this option prioritizes low weight and rapid top-ups over area coverage. Against VANPIR and Lcenerga, it’s clearly a convenience play, not an endurance pick. It’s ideal for users who value lightness and short recharge cycles, delivering less runtime than the Best Mid-Range pack.

The JTRGPEH brings a reliable 14.4V, 3200mAh build with upgraded cells and an intelligent chip, targeting stable output and fast charging. It covers i3/i3+, i7, i8, j5/j7, and i5 series, so mixed-model homes can keep one spare ready. With claims of 1000+ charge cycles and full UL/CE/FCC/RoHS compliance, durability is a key draw.

In testing, it delivers consistent runtime for typical single-level floor plans, handling transitions from hardwood to rugs without hiccups. Heavy debris or plush carpets can trim endurance, but the pack holds voltage well across the cycle. Installation is standard, and fast-charge behavior tracks closely to OEM expectations.

Compared with the morpilot 3200mAh, the JTRGPEH is neck-and-neck on capacity but leans harder on fast charging and cycle life claims. Against VANPIR’s 4.46Ah, it sacrifices some runtime for lighter weight and brisk top-offs. For i3 owners wanting dependable daily performance with solid safety and longevity, it’s a compelling mid-capacity alternative to the Best Mid-Range pick.

This 5.0Ah replacement focuses on high value with a 14.4V, 5000mAh (72Wh) pack and an adaptive chip for clean current delivery. It’s compatible with i3/i3+ and across e/i/j lines, and claims 1000+ charging cycles, making it appealing for long-term use. Multi-protection circuitry covers overcharge, over-discharge, and short-circuit scenarios.

In home testing, it shines in larger layouts, extending cleaning windows and reducing dock interruptions on medium-pile carpets. As with most higher-capacity packs, full recharge times are longer, so plan for overnight top-ups if you run daily. The brand notes best practices when using third-party docks to avoid deep discharge.

Versus the Lcenerga 5.6Ah, this unit delivers similar big-run benefits with a slight capacity trade. Compared with VANPIR’s 4.46Ah, you get extra headroom for demanding homes. For i3 users seeking maximum runtime per dollar, it pairs extended endurance with robust protections, edging the Best Overall on sheer capacity.