BA2800 56V 5.0Ah Replacement for EGO 56V Battery BA2800 BA1400 BA2800T BA4200 BA1400T Compatible with All EGO 56V Power Tools-New Upgraded 4X Longer Runtime and Battery Holder

I purchased the "EGO Power+ ST1521S 15-Inch String Trimmer with POWERLOAD and Carbon Fiber Split Shaft Weed Wacker 2.5Ah Battery and Charger Included." The included 2.5Ah EGO battery was not sufficient to help us finish weed whacking around the edges of our 3 acre lawn, around our garden, and trees and bushes. SO we tried this 5.0 Ah replacement battery with our fingers crossed. My wife has been elated at how this battery has allowed us to do so much more. It lasts so much longer, and the charger we bought with it works well. We are considering buying another.

Works exactly the same as the original E-Go product, with less weight. Fits the same, uses the same charger, takes approximately the same amount of time to charge, usage time is almost the same to the minute for me, and it's nearly $200.00 cheaper than a replacement from the company, Lowes or Home Depot.

So far so good with the battery. My only complaint is that the charger does not shut off when the battery is fully charged.

This battery is bigger, heavier and bulkier than the normal 56v EGO battery, but works well. My old battery was losing power so this one more than made up the difference.

It’s new just have the first charge on it. One thing I like is the wall mount, keeps the battery off the floor and safe.

I’m extremely disappointed with this battery. I don’t know if I received a defective unit or if this is just how it performs, but it doesn't even match the runtime of my 3 year old OEM battery, which has already degraded over time (hence the need for a replacement).In my mower, this battery only managed about 1,500 square feet per charge. For comparison, my worn OEM battery still covers around 2,000 square feet, and when it was new, it could handle closer to 3,000. I didn’t expect this battery to actually deliver "4x the power" as advertised, but I at least hoped it would match a new OEM battery.I understand the price point suggests a compromise, but the marketing was misleading enough that I can't justify giving this more than 1 star. I plan to update this review after the next mow in case this was a fluke or it didn’t fully charge the first time.Additional Note: The battery charge indicator is terrible. It dropped to one light halfway through and didn't give a warning until 10 seconds before shutting off.

Working excellent. Little heavy but stay longer time active for blower.

My use case is that I have my original 7.5 AMP EGO Battery but over the last couple of years it no longer has enough capacity to mow the entire lawn on one charge. I have about a 1/3 of an acre suburban neighborhood lot. So, I was looking for a battery I could swap in to finish the job, rather than wait for the my original battery to charge. This battery has been able to fulfil that use case. It has nowhere near the capacity of my 7.5 Amp battery but it does let me get about a 1/4 of the job done, so its running for about 20 minutes. I then swap in the larger battery to finish the job. Its a nice looking battery, fits the charger fine. It does appear to shut -off the battery charger fan when its done charging (this was a concern based on many other reviews of replacement batteries).On the negative side the battery indicator is useless. It goes from five lights to one light within the first few minutes. It doesn't really help you gauge the capacity left in the battery. Your mowing most of the time with one indicator. I bought this battery rather than some of the less expensive models because it had an capacity indicator. So, if your thinking about buying this battery because it has a battery indicator, this isn't your battery.