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    Can a basic CCCV power source be left connected to a Li-ion battery with BMS?

    I am looking to integrate a small 13s2p battery into a rackmount enclosure to act as a UPS. As such I would like to have this battery charging whenever other sources of power are connected. My basic plan was to use a JBD BMS and then a simple CCCV DCDC converter (RD RK6006) supplying it with...
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    Has Energus - Maker of Tiny BMS folded

    Their website (www.energusps.com) now redirects to www.enepaq.com Still seems to be based out of Lithuania, so perhaps they have just pivoted away from selling to end users? Just wondering if anyone has any more info.
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    Soldering with a spot welder...

    Given the attempts to find a way to get copper strip to work well as a DIY-able battery connect it got me wondering the question: What would happen if you place a wee blob of solder paste between cell and copper and then zapped with the spot welder? An initial google throws up someone who...
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    Battery Hookup 32650 (32700) LiFePo4 cells

    Anyone got any of these in to test at various C rates? They look awfully tempting at their $4 price point.
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    Any EU suppliers that can supply 6000mAh 32650?

    I have just seen BH's $4 32650 6000mAh cells, it's just about the best deal I have seen on new lifepo4 cells from a known reputable supplier. The price and weight bring it within sniffing distance of my Li-Ion build. It's still heavier, but only by about 15-20%, and as I was over-provisioning...
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    Cell level fusing - current failure requirements

    Just wanted to check with the community knowledge if there is any reason for cell level fusing other than internal shorts? My thinking is that in this event the 'fuse' will deal with a huge current. Lets say in a 9p pack you are easily talking hundreds of amps (If I am correct to assume that in...
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    14S9P Samsung 50E battery pack build

    A previous topic I had covering my build went walkies so this is a new topic to check my thinking during my build. I have already had some super useful discussion in the aforementioned topic as well as doing plenty of reading on cell life and life cycling by the members here doing that testing...
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    Topic vanished?

    A topic I made with advice on what charger to use among other discussions about batteries has vanished - I really don't think it was breaking any rules but if so I didn't receive any kind of warning. I was just wondering if maybe it was something server-side?
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    'Plug and Play' Life Cycle Testers

    So just wanted to check if there are many options for such a thing, I have come across the EBC-A20 and this very thorough review on BudgetLightForum: http://budgetlightforum.com/node/56801 But other than that there doesn't seem to be anything, I can see a few of the chargers/dischargers from...
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    Reputable suppliers of LFP LiFePO4 pouch cells

    I can find plenty of suppliers aimed at the EV market for prismatic cells, I can even find suppliers of LitWerks massively expensive 26650 LiFePO4 cells. But these cells are significantly more expensive and massively more expensive than their Li-Ion 3.7v counterparts. Pouch cells on the other...
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    Difference between consumer and wholesale prices - UK

    This is mostly a curiosity, but whenever I look online for batteries in the UK the consumer price for 1 cell is regularly double that of a 'wholesale' cell, even when the wholesale allows you to buy just a few cells. I have never seen anything like it in other areas (like, if you buy electronic...
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