![]() For last 2 months left it in parallel cell by cell with 5 new cells fully charged, we will see :-o) The characteristics of all 5 cells in that pack identical high Z, bizarre as all other packs I’ve checked had variations, someone strange one pack same failure mode in all cells – maybe it’s a take – might cut one open. In one case of several dozen all the cells failed high resistance ie meg ohms, wonder if these cells have a built in eutectic metal fuse, they don’t seem any different to others, maybe experiment fell into part production. ![]() It’s interesting as there seem odd failure modes – in a couple of cases can be “rejuvenated” to within about 90% of new as if some organic like healing process at work, weird. Only hobby stuff but, gets around many issues. So opened the packs up, drilled holes adjacent to + & – of each battery so external circuits can control charging far more precisely. Quite a few of them were discarded due to it seems batteries not charging or discharging equally regarding the settled voltage. Have few older Ryobi packs with that extended 3 pin comparatively awkward charger connect unlike the flatter one shown here. Posted in Transportation Hacks Tagged battery, ebike battery, ryobi Post navigation Those Ryobi cells certainly seem to have carved themselves a niche in our community! Take a look at the video below the break for more details. The benefits of this are immense as they bring a good-quality conversion within reach of many more bicycle owners, with all parts being only a simple online order away. The value in this is in its reminder that these packs have evolved to the point at which they make a viable alternative to a much more expensive bike-specific pack, and that their inclusion of all the balancing and protection circuitry make them also a much safer option than building your own pack. The bike conversion is relatively conventional with the crank replaced by a crank and motor assembly, and a pair of the Ryobi packs in 3D-printed holders on the frame. Their project was to convert a pedal bicycle to electric assisted power, and in doing so they didn’t make their own pack but instead used off-the-shelf 40V Ryobi power tool packs. Happily for those who are apprehensive on the battery front there’s a solution courtesy of a group of engineering students from the University of Pittsburgh. But it’s not a path without hazard, and mistakes with battery protection and management can be costly. That's not mentioning those batteries will power every Ryobi tool from a fan and light to an auger and lawn mower.By now, the process of creating custom lithium-ion battery packs is well-known enough to be within the reach of most makers. If you really want the inverter for some reason, it's been $100 with the two 4ah batteries during Ryobi days, and probably will be again. So for $65 you will have a much bigger power bank for cheaper. If you are complaining about the batteries, you can do a hack deal and get two 4ah batteries for about $50. You can buy a stand alone Ryobi battery to USB adapter for $15. They added it because they all received feedback from owners it would make it more versatile. These used to only have receptacles on them, no USB. Thinking of this as a power bank is missing the point of the tool. If you can't find a use for it, then pass. Slick Deals loves Ryobi because every tool uses the same battery style, so there is no concern you have to buy an old 'new' battery years from now to use your tools, or throw them away and buy a new system. You most likely are not starting out buying this unless you have a specific use case you need an inverter for. Doing that alone saves me enough $ in electricity a year to cover the cost of an inverter with battery bundle.Įvery tool line makes an inverter, so most people just buy the brand they are in and use existing batteries. ![]() I don't need the internet up 100% of the time, but I do want everyone to continue using it during a power outage to avoid using my phone's hotspot and battery. I personally leave one next to my Modem and Router to replace a UPS and save some $ avoiding the constant power draw a UPS needs. ![]() That includes, but is not limited to Fans, Lamps, low power tools, TV's/Monitors, Laptops, Network equipment, electric kitchen appliances (ex can opener). People still have stuff that needs a receptacle to power. ![]()
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