The battery mod link on the Inspire Help - Tips & Accessories page is dead, can admins please update or request/notify someone to update?
Battery Mod Info
- Thread starter damoncooper
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hello,
I am watching attentive videos and contributions on the projectof flight time extension.
There are fixed calculation methods on the subject of flight time extension.
In short, it is indeed an interaction of, propeller, efficiency of the Brushless Motor and the performance of the batteries / weight.
Since the weight remains the same for the Inspire, you can only get the power out of the engine and the battery. (and software settings in flight)
It is also possible to limit the performance via the software to the extent that in flight (not just hovering) power peaks are limited and the flight time extended.
Do you reach with these batteries maybe more flight time?
(Replace that 12 cells from TB47)
3.7V 8.3 Wh
12 / 2 Cell (6)
34 x 96 x 96
570 g
VS
TopFuel-LiPo-10C-ECO-X-Light-5400mAh-6S
632 g
SLS-APL-7000mAh-6S1P-22-2V-25C-40C
836 g
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these guys seem to have something........but ive heard these stories to many times with no proof.........but they will sell it to you
Mongrel Gear Australia
Mongrel Gear Australia
Ok lads, I bought a bunch of TB47 or TB48 PCBs as the cells were already removed and I hooked one of them up with a regular 22.2 5000mah LiPo and to a PC running bqstudio. The PCB has test points for the SMBus that connects the bq78530 to the MSP530 so the software can talk to the battery manager IC. I can read the registers and I can tell it is a TB48 as the Max cell capacity is larger than a TB47. The question is, will I be able to UNSEAL it and edit the params? I need to read the bq78350 pdfs and the bqstudio docs to understand how to do that and hopefully DJI used the default password... My plan B is to solder two 0.002Ohm resistors in parallel to the two already on the PCBs. This way the charging and discharging currents will be read as half of what they really are allowing to recell the PCB with a Lipo or LipoHV with double the capacity (or use some other value to prorate the currents to match the new cell capacity). If anyone knows what password did DJI use for UNSEAL the bq78350? 
. BTW if anyone has ever wondered what is the max allowed charge current/voltage for a TB48, they are right there in the screen capture, 26.1V and 8.55A). Ciao!
. BTW if anyone has ever wondered what is the max allowed charge current/voltage for a TB48, they are right there in the screen capture, 26.1V and 8.55A). Ciao!Attachments
First post here but on the same hunt as the rest of you. Saw these within a inspire group on Facebook. Gives some info on the batteries used. And I've found a link to where you can purchase similar products maybe built by the same individual. I'll post it once I find it
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Well I make another post in hope that people are still trying to progress with this. Going down rabbit holes the other night. So seeing that the board under the battery top is just a power control board, could it possibly just be replaced with something not produced from DJI? Also stumbled across some cells that might be something to look into.
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We do not condone nor help hack proprietary software/firmware on this site.
Suggest you contact the Chipset manufacturer.
Ouch i see. But that will be good for all of us. DJI didn't produce i1 battery anymore to force us to buy i2. Thats bad. I havelipo +-5500-6000mah that fit in oryginal enclosure. I only need to reset cycels, lifetime and capacity in bms ;/
Do you have any succes to unseal BMS?Ok lads, I bought a bunch of TB47 or TB48 PCBs as the cells were already removed and I hooked one of them up with a regular 22.2 5000mah LiPo and to a PC running bqstudio. The PCB has test points for the SMBus that connects the bq78530 to the MSP530 so the software can talk to the battery manager IC. I can read the registers and I can tell it is a TB48 as the Max cell capacity is larger than a TB47. The question is, will I be able to UNSEAL it and edit the params? I need to read the bq78350 pdfs and the bqstudio docs to understand how to do that and hopefully DJI used the default password... My plan B is to solder two 0.002Ohm resistors in parallel to the two already on the PCBs. This way the charging and discharging currents will be read as half of what they really are allowing to recell the PCB with a Lipo or LipoHV with double the capacity (or use some other value to prorate the currents to match the new cell capacity). If anyone knows what password did DJI use for UNSEAL the bq78350?
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Suggest you try..
I would remind you of our forum rules (which presumably you read before you joined)
16. For everyone's safety, we do not condone the manipulation of the manufacturer's software or firmware (software/firmware hacks), and may, (at our discretion), delete without warning any content that violates or promotes this type of activity.
I'm wondering why it's necesary to reset cycles and capacity? When I flew with second battery attached to the main TB48 on DJIGO I've got 20 min on the time scale and I actually did 20 min of flight where it's usually only 12-13 mins with the heavy x5r camera. This makes me think that the dji battery doesn't care much about what cycles and capacity it reads from batterys memory but measures volts and ampers to predict the flying time left. Only reason for matching the capacity is if you are going to use dji charger but this could be also avoid with standard rc lipo charger. Still the whole thing is not plug and play as with the original battery. Would like to hear if you suceeded on modding without posting the details here on the forum of course
I've been taking the time to go through this whole thread, 2 days I tell you; so much useful contributions.
By total accident, I discovered yesterday evening that Hubsan Zino's run 3S Lipo intelligent batteries (manufacturer of replacement units seems to be GiFi Power) with 8C discharge rate and at 11.4V (various capacities available: 3000mAh / 3100mAh / 3200mAh / 3400mAh / 4200mAh / 5000mAh) that are relatively light (weights: 3200mAh = 187g, 4200mAh = 219g, 5000mAh = 237g, considering the advertised weights include the casing and intelligent PC board) with operating temperatures of 5degC to 45degC. I'm looking at this wondering how this will pair (in serial, to get to 22.8V) with the TB47 / TB48 mod.
It was previously speculated here that the additional capacity isn't being recognized by the battery / UAV because of the voltage differences, well here we have some relatively inexpensive batteries (thus taking them apart wouldn't really hurt the wallet) to test that hypothesis.
+++ EDIT +++
OK so, after going through parts of this thread again as well as some online resources, I realize the 8C batteries isn't a good idea to mix with the DJI TB47 / TB48 batteries, which are 10C from what I can tell from this thread.
Another thing I just realized, looking at the TB47 & TB48 batteries, their voltages differ.
TB47: 22.2V, 4500mAh, 99.90Wh, 6S, 10C.
TB48: 22.8V, 5700mAh, 129.96Wh, 6S, 10C.
From this one would deduce that if you were going to carry additional batteries and link it into the supply, for the UAV to recognize the additional capacity properly you would require different kinds of batteries for the different DJI batteries. Or just stick to the 22.2V 6S 20C/25C units, as tested extensively here, and just keep an eye on the available flight time left.
By total accident, I discovered yesterday evening that Hubsan Zino's run 3S Lipo intelligent batteries (manufacturer of replacement units seems to be GiFi Power) with 8C discharge rate and at 11.4V (various capacities available: 3000mAh / 3100mAh / 3200mAh / 3400mAh / 4200mAh / 5000mAh) that are relatively light (weights: 3200mAh = 187g, 4200mAh = 219g, 5000mAh = 237g, considering the advertised weights include the casing and intelligent PC board) with operating temperatures of 5degC to 45degC. I'm looking at this wondering how this will pair (in serial, to get to 22.8V) with the TB47 / TB48 mod.
It was previously speculated here that the additional capacity isn't being recognized by the battery / UAV because of the voltage differences, well here we have some relatively inexpensive batteries (thus taking them apart wouldn't really hurt the wallet) to test that hypothesis.
+++ EDIT +++
OK so, after going through parts of this thread again as well as some online resources, I realize the 8C batteries isn't a good idea to mix with the DJI TB47 / TB48 batteries, which are 10C from what I can tell from this thread.
Another thing I just realized, looking at the TB47 & TB48 batteries, their voltages differ.
TB47: 22.2V, 4500mAh, 99.90Wh, 6S, 10C.
TB48: 22.8V, 5700mAh, 129.96Wh, 6S, 10C.
From this one would deduce that if you were going to carry additional batteries and link it into the supply, for the UAV to recognize the additional capacity properly you would require different kinds of batteries for the different DJI batteries. Or just stick to the 22.2V 6S 20C/25C units, as tested extensively here, and just keep an eye on the available flight time left.
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