Recent content by icenov

I use the standard Ryobi (DeltaQ) charger and it works fine, if a bit slow (10 A max I think). The Daly BMS disconnects once the high voltage set point is reached (about 57 V from memory).

I just replaced the slave deck motor controller and implemented your modification - but using a pack of 10 x 330 ohm resistors in parallel that I had from another project (so 33 ohms x 50 W). I checked with an oscilliscope and voltage stabilises after about 2 secs. Presumably that is OK? I...

Some info in this post:

An update - just blew a couple of caps (I think) in the deck motor controller! Mower wasn't under load, just driving (my wife was using it) and then bang and some sparks! Here's a photo of the controller board with holes where the 2 caps(?) were! Hard to tell what was there, as they are normally...

I'm sure it's not the LiFePO4 battery pack voltage. A fully charged lead-acid 48 V pack can sit at 56 V and even the DeltaQ charger that Ryobi supply with the 48ZTR will charge over 56 V when connected to the lead-acid pack. Even Ryobi wouldn't risk under-rating their caps by such an amount just...

Try this: https://f01.justanswer.com/MichaelS910/797bb2eb-306b-4d92-9a34-d13b821cce50_RYOBI_ZTR_MOWER_REPAIR_4-18-2019.pdf https://diysolarforum.com/threads/ryobi-zero-turn-mower-sla-to-lifepo4-conversion-updated-build-complete-with-pics.22922/post-438835

I've had the same thing - battery well charged but no power. In my case it's due to the BMS turning off after some idle period. Connecting the charger brings it back to life, as you found. I've got a Daly BMS with bluetooth that I can connect via phone app and change the idle period to never...

I had a similar problem with my Delta-q charger - which I think is similar to the ezgo. In my plug from the charger there are 3 pins, white (+ve), black (-ve) and green. You won't get output from the charger if there is no connection to green (which I think is from the lockout sensor). I put a...

I had a similar problem - fully charged battery system that would only fire the contactor then shut down. Battery voltage at 52 etc. In my case it is a dodgy BMS (a Daly unit) that I may have damaged during install. The solution - in my case - is to use the bluetooth app and reset the BMS...

I believe it does, as these systems are used for e-bikes/carts etc and they do sell a throttle if you need it. But I've not received them yet so can only go on what their website says.

From the manual, the cutting motors are 1300 W each - it says 2600 W "cutting power". Not sure about the rpm, but guess it would be around 2500-3000 rpm. I'm looking at replacing these motors with 2x3kW, which I've bought from Golden Motors. I've finished the battery upgrade and while the run...

I don't know about the Calb cells but the cells I used were 7.9 in high and by the time you added a bit of space for lugs it was a very close vertical fit. My box external dimensions are 8.7 high, 14.1 wide and 20 in long. I had no clearance on the width - just fitted, and almost no clearance on...

Excellent, thank you. Also just to comment about the original Pb-acid batteries, we also found the lifetime to be very poor. The hr gauge on the SoC shows 90 hr operation, but the mower had almost become unusable. I just don't think AGM Pb-acid can cope with this type of heavy use. Maybe if you...

Finally got the new battery installed! But not quite finished yet. I was nervous that the box wouldn't fit and it is extremely close in height and width. These are the 200 Ah cells I mentioned earlier. Here are some pics. I had to use a steel box as there wasn't enough room for timber, and...

Yes, Anderson. From the manual, the cutting power motors are 2600 W and drive motors 1500 W, so total of 4100 W. Assume a battery voltage of, say 45 V under full load, this means 91 A, but probably higher due to losses -say 100 A. As the batteries are supposed to be 100 Ah (LPC12-100 (12V 100...