Depending on the initial state of charge of when you received them it could take awhile to do all 16 packs. I just went through each pack repeating the process. You'll will know it's finished when the amps drops to zero, or near-zero. It will charge the battery up to 3.6 volts. Set the volts on the charger to 3.6v, and amps to the max setting-usually this is 4-5 amps. I did this one at a time by hooking them up to a DC bench charger. The first thing you need to do when receiving the batteries is to top-balance. and there was nothing on doing this for the Ryobi Lawnmower. All I knew was that the LA batteries that came with the mower were garbage and expensive to replace, and Lithium was better. FYI.When i started this project I knew nothing. These connected in series will produce a 48v/100ah setup. I have 16 3.2v/100ah LiFePo battery packs. ![]() I know that people convert golf carts from lead acid to LiFe all the time, and I believe that Battleborn mentioned that they have sold LiFe batteries to other Ryobi riding lawn mower owning customers. So what is left? I suppose it could still be the voltage, which I'll further test after I drain some of the power out of the LiFe batteries, but I'm beginning to wonder if has anything to do with the internal resistance of the batteries, the higher capacity of the batteries or some other thing. So instead I have an old incandescent heat lamp hooked up but I suspect it will be another day before I get the LiFe batteries discharged enough to drop the voltage. ![]() Now I have am draining off some power from the LiFe batteries, but its slow since I would need a 24 volt inverter to hook up even one of the batteries to an AC appliance such as a heat gun (They are 24 volt batteries). Perhaps the jumper cable is acting like a low ohm resistor? When I then inserted the jumper cable in between the negative terminal and the mower it worked, so whatever the jumper cable is doing, it has to be between both terminals and the mower. If I left the negative terminal of the LiFe battery directly connected to the mower but used the jumper cable to connect the positive terminal to the mower, all I got was the one click of the solenoid then nothing. There is no measurable voltage drop through the jumper cables. So I disconnected the LiFe batteries from the mower at the terminals, and then used the jumper cables to reconnect them. When I turned the key I got one click from the solenoid and dead as before. So I reinstalled the Battleborn batteries in the mower without touching anything else. I had the new Battleborn LiFe batteries near by, so I disconnected the lead-acid batteries and connected the battleborn LiFe batteries using a very heavy duty set of car jumper cables. The Battle born batteries are still at 53.2 volts. This is telling me that the 1.5 volt increase of the Battleborn LiFe over the old Lead acid batteries might not be the problem. When I took off the charger the batteries dropped to 56 volts and I immediately tried the mower. This morning I hooked up the Ryobi mower charger to the original lead batteries and the voltage went up gradually from 51.7 to 59 volts during a two hour period. No memes (pictures with superimposed text), shit postsĬomplete rules: /r/batteries/about/rules/.If asking a question, ask the actual question, fully yet concisely, right in the title.Be civil: do not insult no all-caps, no excessive "!" and "?", please.Dangerous or damaging (tasers, EMP, vaping).Organic spam from cell and battery manufacturers.Education and safety about batteries and related technologies.Pictures or cells, batteries, power banks, UPSs.Cell, battery, and BMS recommendations and comparisons.Discussion and questions about cell chemistry.Repairing batteries, power banks, UPSs, or BMSs.Battery, power bank, or UPS design help.Replacing a battery / battery cell in a product. ![]() For questions, news, and discussion about batteries, cells, chargers, charger/inverters, power banks and UPSs.
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