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EM3ev doesn't seem to even sell a Dorado compatible battery? No argument with EM3ev being a supplier you trust, but Jenny and Aujiu's batteries are used in 1000's and 1000's of ebikes, scooters, etc. Selling direct to users is a side business for them, they sell wholesale to bike and scooter...

Kinda my question too. Jenny uses Samsung cells or high end Chinese cells depending on the order and a good BMS plus everything is fused properly, I've seen pictures of mine being constructed since it was the first one off the production line and it's double wrapped inside and pure nickel...

What makes the EM3ev safer?

Hey everyone just an update. Into year 4 of this battery and still going strong! Works fantastic! Can recommend it highly enough

This looks more capable for sure. I feel they won't boost to 54.6v but these units are more what I was thinking. https://www.amazon.ca/Cllena-Waterproof-Converter-Regulator-Transformer/dp/B07V1H7RQW This unit is still not quite the right one but try finding some sealed units like this...

My concern with the unit you found is that it's not sealed from the weather. It does claim to be able to handle 1200w but I feel looking at the pics the heatsink won't handle 1200w sustained, I could be wrong though it would need to dissipate about 120w if it's got 10% losses.

Couple notes regarding 52v and Das-Kit. I've used a 52v battery many times on my Moscow+ and my son's Amego/Moscow. Both handled it fine and his Moscow has an unrestricted display so it really uses the 52v and he can get well over 40km/hr and maintain it. Also OVT if your boost converter looks...

Hey everyone. Did another re-test this season of the 25ah battery. The theoretical capacity is 1200wh, after 2+ years of use I can report the measured capacity is 1147wh which I thought was excellent for a battery that has 6000+ km on it and 2 years use (into 3rd year now) . Year 0 - Capacity...

I cannot speak to your Stromer bike specifically. But a device from Amazon like this one will accomplish the goal. https://www.amazon.ca/Regulator-DROK-Numerical-Converter-Adjustable/dp/B08G4S8QQ8 This particular device is NOT a good pick but I just searched up something quick, there's...

Very low. I literally just use 2 old school 60 watt lightbulbs in parallel. The battery lights them up to about 1/2 brightness vs 120vac. They draw about 1 amp so very slow discharge on my tests, I just don't have another load that is as easy to use. I should use the core of old ceramic heater...

Hey everyone, I completed the overnight battery drain test on my 20ah 52v battery from Jenny. We purchased this battery last summer at start of July and my son used it all summer so it's not brand new. Theoretical capacity is 1040wh, but it you do the math on the actual cell specs it would be...

Hey all. There's been quite a bit of interest in me testing the real-world capacity of the 52v battery I purchased from Jenny/Aijiu. It's on the meter now! It'll take about 30 hours to finish the test and I'll report results. Battery started at 58.48v and we'll see what watt-hours/amp-hours it...

A 30amp bms will handle a 1500watt motor, you sure you need more than that? For capacity we are comparing real-world conditions of a battery built from 60+ cells and a BMS that will cut you off below certain conditions versus a spec sheet for a single 50E cell so some variation and losses...

Hi Bikester I'd take any reply from Jenny over my reply, but I own one of Jenny's 25ah batteries, the first one made in fact, lol. I can explain a couple things. - The 24.5ah rating comes from the Samsung 50E cells, they are rated at 4900mah and thus 5 groups of them in the battery pack...

A more detailed review of the 52v battery is coming. So we have 3 bikes and two of them are NCM Moscows and the 3rd a Bafang Mid-drive. On the moscows my bike is the stock controller and limited to 32km/hr. My son's bike has an de-restricted controller and the bafang is de-restricted too. We...

Jenny's awesome! We still chat. I am starting my 3rd summer on the original 25ah battery and it's still every bit as strong as ever! I plan to post an updated capacity report soon. It continues to work as good today as the first day it arrived! Love the range, I rarely use my 16ah batteries at...

I have! My son has it on his un-restricted NCM/Amego bike. We also use it on my regular NCM Moscow+ and a Bafang mid-drive we have. The battery is fantastic and works perfect. Great range. The issue is my son and i haven't done a proper range test to post yet. I think I might need to do the...

Just want to chime in and mention I updated my review of this 25ah battery from Jenny after 1 year of use over on this thread. I re-ran my capacity tests to see how much it degraded over a year (hint: it didn't) and was stunned it did so well to be honest. There's a 52v version on the way to me...

Hey Everyone. More updates on the long term use of the 25ah battery from Aijiu Energy (Or 'Jenny's Battery' as we call it in my household). Last July shortly after receiving the 25ah battery I did a capacity test to verify its total capacity was really as stated. The test at the time came to...

Check out my post on the 25ah battery from Aijiu Energy. @Jenny Mao is a user here and well respected. Aijiu's prices are great and they use name brand cells in the battery packs...