2Big2B
Free Wheeler
I purchased a Daly BMS LiFepo4 8S 24v 100A Model J10A-GA28 on ebay that arrived yesterday. I purchased it based on its following description:
Condition: New: A brand-new, unused, unopened, undamaged item in its original packaging
Brand: DALY
Country/Region of Manufacture: China Custom Bundle: No
Amp Hours: 100A Type: LiFePo4
Chemical Composition: Lithium Iron Phosphate (LiFePO4) Voltage: 24 V
Battery Size: 100A/h Application: Solar/Wind Devices
DALY BMS LiFePo4 8S 24V 100A. Condition is "New". Shipped with USPS Priority Mail.Daly LiFePo4 8S BMS 24 volts 100 Amps common port with balance.
Use with LiFePo4 Prismatic cells, CALB cells, SE cells or any LiFePo4 cells.
Condition is New.
Item located in Fairfax VA, free local pick up also available.
Specifications:
Continuous discharge 100 A
Continuous charge 50 A
Charge voltage 29.2 V / 3.65 V per cell
Overcharge detect voltage 3.75 V per cell
Balance detect voltage 3.5 V per cell
Balance current 30 mA
Over discharge shot off 2.2 V per cell
Wiring instructions included with BMS
This BMS is suitable for LiFePo4, 100 A, 8 cell battery bank only.
The 3.2 V cells must be top balanced before connecting the BMS.
Blue lead labeled "B" is a battery negative terminal connection
Black lead labeled "P" is a negative out to inverter or negative in from solar or other power source.
Wire leads are #8 AWG with M6 terminals.
Basic electrical knowledge required to connect BMS to the battery bank
This was the only Daly BMS that seemed to be custom tailored specifically to my build. There is no mention of its model number of this listing Perhaps for a reason), but it is in small letters on one of the two labels. I took it on faith that this would be new with original packaging and wiring documentation, as there were no other descriptions about its features. I had been hesitating about buying an ISDT BattGo BG-8S Battery Meter to go into my build pending discovery of what connectors might be on this BMS that might offer any better options. The fact that it is not a "SMART" Daly BMS seemed like a good choice given the reviews I have seen about issues with the higher amp ones that Daly sells.
Well what I received certainly is not "SMART" (a good thing?). Apart from the #8 AWG with M6 terminals and connector with 8 balancing leads there are no other connections to it. It was shipped without any packaging or documentation. I needed to verify if it was indeed what I needed or not. I see there is another Daly 18650 BMS LiFepo4 8S 24v 100A Model which I am sure I don't want. Naturally I googled the model of what I received. Nowhere to be found. Naturally I asked the seller who just blew me off. I doubt he knows anything more than I do about what this model is. I also doubt English is his native language. Dealing with him is futile. Out of principle I have put in for a return through PayPal's Purchase Guarantee with the argument that I shouldn't have to pay for return shipping given the fact that the seller lied about it being "new". He admitted he bought it directly from the manufacturer - eg, he obviously sourced this from a bulk purchase and just stuffed it in a bag and sent it to me, sans documentation. That is not what I paid for.
I speculate that perhaps this was from an inhouse OEM order as a possible reason the specs are so elusive.
Frankly though, apart from being a little annoyed this device might be fine. I assume that as my battery pack will be at 100A, I suppose it would be adequate. It is obviously authentic and I trust that it falls into the spec of my build. I certainly can tie in an ISDT BattGo BG-8S Battery Meter for monitoring the top/bottom balancing if I want to - else just check voltages along the way and routinely to verify the BMS operation, albeit less convenient.
I paid a total of $76 w/shipping plus the $11 optional 3-Year SquareTrade Warranty (Electronics $50-75) just in case.
SHOULD I KEEP IT ?
I cannot find anything about this model nor any spec sheet for it. I don't know where else to look.
I hate relying solely on faith in the brand and the sellers word for it.
Would I do better with something else?
Condition: New: A brand-new, unused, unopened, undamaged item in its original packaging
Brand: DALY
Country/Region of Manufacture: China Custom Bundle: No
Amp Hours: 100A Type: LiFePo4
Chemical Composition: Lithium Iron Phosphate (LiFePO4) Voltage: 24 V
Battery Size: 100A/h Application: Solar/Wind Devices
DALY BMS LiFePo4 8S 24V 100A. Condition is "New". Shipped with USPS Priority Mail.Daly LiFePo4 8S BMS 24 volts 100 Amps common port with balance.
Use with LiFePo4 Prismatic cells, CALB cells, SE cells or any LiFePo4 cells.
Condition is New.
Item located in Fairfax VA, free local pick up also available.
Specifications:
Continuous discharge 100 A
Continuous charge 50 A
Charge voltage 29.2 V / 3.65 V per cell
Overcharge detect voltage 3.75 V per cell
Balance detect voltage 3.5 V per cell
Balance current 30 mA
Over discharge shot off 2.2 V per cell
Wiring instructions included with BMS
This BMS is suitable for LiFePo4, 100 A, 8 cell battery bank only.
The 3.2 V cells must be top balanced before connecting the BMS.
Blue lead labeled "B" is a battery negative terminal connection
Black lead labeled "P" is a negative out to inverter or negative in from solar or other power source.
Wire leads are #8 AWG with M6 terminals.
Basic electrical knowledge required to connect BMS to the battery bank
This was the only Daly BMS that seemed to be custom tailored specifically to my build. There is no mention of its model number of this listing Perhaps for a reason), but it is in small letters on one of the two labels. I took it on faith that this would be new with original packaging and wiring documentation, as there were no other descriptions about its features. I had been hesitating about buying an ISDT BattGo BG-8S Battery Meter to go into my build pending discovery of what connectors might be on this BMS that might offer any better options. The fact that it is not a "SMART" Daly BMS seemed like a good choice given the reviews I have seen about issues with the higher amp ones that Daly sells.
Well what I received certainly is not "SMART" (a good thing?). Apart from the #8 AWG with M6 terminals and connector with 8 balancing leads there are no other connections to it. It was shipped without any packaging or documentation. I needed to verify if it was indeed what I needed or not. I see there is another Daly 18650 BMS LiFepo4 8S 24v 100A Model which I am sure I don't want. Naturally I googled the model of what I received. Nowhere to be found. Naturally I asked the seller who just blew me off. I doubt he knows anything more than I do about what this model is. I also doubt English is his native language. Dealing with him is futile. Out of principle I have put in for a return through PayPal's Purchase Guarantee with the argument that I shouldn't have to pay for return shipping given the fact that the seller lied about it being "new". He admitted he bought it directly from the manufacturer - eg, he obviously sourced this from a bulk purchase and just stuffed it in a bag and sent it to me, sans documentation. That is not what I paid for.
I speculate that perhaps this was from an inhouse OEM order as a possible reason the specs are so elusive.
Frankly though, apart from being a little annoyed this device might be fine. I assume that as my battery pack will be at 100A, I suppose it would be adequate. It is obviously authentic and I trust that it falls into the spec of my build. I certainly can tie in an ISDT BattGo BG-8S Battery Meter for monitoring the top/bottom balancing if I want to - else just check voltages along the way and routinely to verify the BMS operation, albeit less convenient.
I paid a total of $76 w/shipping plus the $11 optional 3-Year SquareTrade Warranty (Electronics $50-75) just in case.
SHOULD I KEEP IT ?
I cannot find anything about this model nor any spec sheet for it. I don't know where else to look.
I hate relying solely on faith in the brand and the sellers word for it.
Would I do better with something else?
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