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Rating: | (4.4 out of 5 stars) |
Reviews: | 1,967 Amazon Reviews |
Product Name: | ROMOSS Power Bank 60000mAh High-Capacity Portable Charger, Power Station, 22.5W Fast Charging, PD 3.0, USB C, 4 Outputs & 3 Inputs with LCD Display for iPhone, Android Travel and Outdoors |
Manufacturer: | ROMOSS |
Model Number: | PEA60 |
Product SKU: | B08XJXY25H |
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I can also now confirm that my 45watt USB-C wall charger will only charge this to 86%, but my Macbook Charger that is 87watts is good enough to get it to 100%.
I have no clue how many people seriously claim to be experts here and just present opinion as fact over and over.
Personally, I've tried to avoid LiPoly for going on close to 20 years.
They have way too many downsides compared to Lithium Ion, starting with the fact that they are even less shelf stable.
It also doesn't sit well with me that they're incorrectly telling people to "calibrate" the battery by fully depleting it.
Remember, people: Lithium based batteries do not have a memory effect and thus can't be calibrated through power cycles.
All you're doing by depleting it fully is stressing the battery, which actually causes it to not hold a charge as well.
It's common for batteries in a pack to have different states of charge (e.g. 4.05v, 4.12v etc). In those situations it's common to rebalance individual cells to bring the voltages in sync either by top balancing or bottom balancing cells.
A lot of Battery Management Systems have an automatic rebalancing algorithm that will do a bottom balance when you discharge the pack below 10%. Because this pack has discharge protection, 0% on it's gauge is likely just the threshold where it cuts off but isn't truly depleted. And discharging to 0% would trigger the bottom rebalancing.
It's also possible this is cheap Chinese crap and will burn your house down.
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Portable Charger Power Bank, 50000mAh Power Bank 22.5W PD and QC 4.0 Quick Charging with 5 Outputs & 3 Inputs,LED Display External Battery Pack for iPhone,Samsung,Tablet, iPad etc https://a.co/d/1F84RAx
Check the product details and customer reviews to learn more about this item"
Battery nerds chimed in on the 1-star reviews, this is a no-go for me.
(and probably for lighting the campfire as well)
It went back and I got another brand of battery that works perfectly and gives the correct capacity and discharges as it should.
Did you read my comment?
You're not supposed to calibrate any lithium based batteries.
They don't have a memory effect, so there's nothing to calibrate.
Our community has rated this post as helpful. If you agree, why not thank cptskippy
It's common for batteries in a pack to have different states of charge (e.g. 4.05v, 4.12v etc). In those situations it's common to rebalance individual cells to bring the voltages in sync either by top balancing or bottom balancing cells.
A lot of Battery Management Systems have an automatic rebalancing algorithm that will do a bottom balance when you discharge the pack below 10%. Because this pack has discharge protection, 0% on it's gauge is likely just the threshold where it cuts off but isn't truly depleted. And discharging to 0% would trigger the bottom rebalancing.
It's also possible this is cheap Chinese crap and will burn your house down.
Our community has rated this post as helpful. If you agree, why not thank slimdunkin117
You're not supposed to calibrate any lithium based batteries.
They don't have a memory effect, so there's nothing to calibrate.
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I see people vote on assumptions and no actual first hand knowledge still.
It was a user review as I stated, "...as multiple users reviews point out...".
You might have your units mixed up.
You didn't say anything that makes sense.
In simple terms, I'm saying your standard 5v 2amp charger won't charge this to 100%. Which is the reason why it has the bad reviews. It does not come with its own charger so folks are using whatever they have lying around. Unless you are a tech geek or just lucky to own a higher powered USB charger by happenstance, you probably use a generic USB charger that won't provide enough charge.
I haven't opened it up yet to inspect the internals so nothing definitive from me. I based my presumptions on verified user reviews and not pure assumptions.
Our community has rated this post as helpful. If you agree, why not thank MKDas
Personally, I've tried to avoid LiPoly for going on close to 20 years.
They have way too many downsides compared to Lithium Ion, starting with the fact that they are even less shelf stable.
It also doesn't sit well with me that they're incorrectly telling people to "calibrate" the battery by fully depleting it.
Remember, people: Lithium based batteries do not have a memory effect and thus can't be calibrated through power cycles.
All you're doing by depleting it fully is stressing the battery, which actually causes it to not hold a charge as well.
Actually what I think they meant is calibrating the BMS. Which is a common practice for larger power station like EcoFlow, Bluetti etc. It's to let the BMS know that this is the lowest voltage and this is the highest voltage. So that the BMS can correctly interpret the charge level and act accordingly.
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These are supposedly LiPoly, not Lithium Ion.
Aren't lipos a massive fire hazard compared to lion? Sure for RC cars lipo is great as you want bang and you can keep them in fireproof bags. But shouldn't we store these just as safely as we do lipos for RC? Help thanks