Battery 56V, 7.5Ah - BA4200T

Despite the fact that I have a lot of experience with LiFePo batteries I thought I'd try one of the much cheaper Chinese replacements for the 7.5 AH Ego Power battery. Here's what I learned. The original, now five-year old battery that came with my Ego lawn mower when new was beginning show its age. I was no longer able to mow both front and back yards with just one full charge. Then, the mower's battery indicator would flash red even before finishing just the (larger) backyard. That said, these batteries should last MUCH longer. Current LiFePo chemistry is good enough that we should reasonably expect at least several thousand cycles before reaching a theoretically diminished limit of 80% of original capacity. Unlike older battery chemistries LiFePo battery packs typically deliver a consistent level of energy until nearly exhausted when they suddenly fall off a cliff and the built-in Battery Management System, (BMS) shuts everything down to protect the cells from further damage. So, five years is way short of these typical expected lifetime values. I got about half of what I expected especially when using the Ego Power battery charger. I wouldn't care so much about the failure to deliver the expected performance, but these batteries are not cheap! With this in mind I didn't feel like I owed the Ego Power people my continued business. Going all-electric was supposed to save a few dollars on fuel over the typical gas-powered mower we all grew up with, right? Instead, any savings I was supposed to get by being oh-so cool and environmentally-concerned was wiped out when I only got half of what I expected from the battery. What did I do? First I bought a 6.0 AH Chinese knock-off on Amazon. It looked just like the Ego-branded battery, but slightly smaller in size and weight as expected. I incorrectly assumed that 5-6 years of improving battery technology might work to my advantage and the labeled AH difference might be a wash. Yes, a lower capacity battery module at 6.0 vs. 7.5 Ah, but MUCH cheaper to buy than the equivalent 7.5 AH Ego Power-branded offering. I tested the the 6.0 AH the best way I should: by mowing the lawn! I had to wait a while to allow the grass grow enough to try the battery out. My un-scientific verdict was that this brand new advertised 6.0 AH battery was actually closer to 4.8 - 5.0 AH. Not even close to the advertised 6.0 AH. Thankfully, Amazon was good enough to accept my return even after a few weeks had passed. I've read all the comments about having the proper combination of Ego battery and the Ego charger. But all of these batteries, including the Chinese knock-offs, are assembled with their own built-in BMS's. Fact is, LiFePo batteries could care less about being charged by a special LiFePo charger since the battery's own BMS regulates everything about the charging/discharging process internally. Ultimately, I bit the bullet and forked over for the new Ego Power-branded 7.5 AH battery knowing that while it seems to have the same amount of power I need to do the job, it will probably not last as long as it should. This is an issue which Ego Power and all its competitors need to address. All that said, the durability and overall build quality of all my Ego Power products are excellent. I look forward to trying out whatever new products they come up with.

La batteria è arrivata in tempi brevi, ma vedendo la data di produzione ho visto che ee' stata prodotta ben 2 anni fa e questo credo che incida sulle prestazioni.

Kann ich nicht nachvollziehen.

I haven't used the batteries yet. I do have similar batteries currently and they are fantastic. I have a long driveway and bought these as extras for heavier storms. So I am hoping for the same experience with these new ones. But I am leaving 5 stars here for the seller - Jack's small engines - for how prompt they were about responding to some of my questions about the shipment.

Excellent product, not to heavy , so worth to have the extra juice to finish the job when using the 880 cfm leaf blower to blow the snow in -25 Celsius weather!!! Shipping was super fast and safely packaged!!!