In-depth review of Mavic Pro extended capacity battery (Hobbitec 6830mAh) - Performance and raised questions

[Conservative Nihilist]

That happened to me on a pair of extended Mavic Pro Batts. One was fine. I lodge a complaint with AliExpress, not the company and did received a refund. The company wasnt happy as they said they would have too care of it. I did order 2 more for the M2P and they were good. Then another for the M2P and it was good. Took one apart and posted pics on a forum. I now ordered another for the M2P and a 12000mah for the Air2. See what happens.

It is amazing to learn that you were able to get a refund on the dud Mavic 1 Pro battery that you bought on Ali Express. I looked everywhere on that website but was unable to find any means to lodge a complaint, so I just took the loss. Now I wish I had looked for a means to contact the seller with more patient determination.

 

[ImtiazM60]

I just recently purchased a 12,000 mAh Mavic 1 pro, extended high capacity battery. Only recently i purchased my 2nd hand Mavic 1 pro, with 3 spare batteries. So i'm excited to see how far i can push this thing with the new extra large battery. On the ad they claim that it can hover up to 55 minutes, or fly 45 mins minimum. Some of the users claim to get 1 hour fly time before battery runs empty. https://www.aliexpress.com/item/100...o.order_list.order_list_main.5.610d1802MLVJdh

 

[GadgetGuy]

I just recently purchased a 12,000 mAh Mavic 1 pro, extended high capacity battery. Only recently i purchased my 2nd hand Mavic 1 pro, with 3 spare batteries. So i'm excited to see how far i can push this thing with the new extra large battery. On the ad they claim that it can hover up to 55 minutes, or fly 45 mins minimum. Some of the users claim to get 1 hour fly time before battery runs empty. https://www.aliexpress.com/item/100...o.order_list.order_list_main.5.610d1802MLVJdh

YMMV!
Depends upon the environment, the speed, and how low you are willing to go on the battery. DJI's stipulations on their advertised claims are 100% to 0% in a windless condition at sea level traveling at a constant speed of 15mph with OA off, and no recording or photography during the flight.

 

[Conservative Nihilist]

I just recently purchased a 12,000 mAh Mavic 1 pro, extended high capacity battery. Only recently i purchased my 2nd hand Mavic 1 pro, with 3 spare batteries. So i'm excited to see how far i can push this thing with the new extra large battery. On the ad they claim that it can hover up to 55 minutes, or fly 45 mins minimum. Some of the users claim to get 1 hour fly time before battery runs empty. https://www.aliexpress.com/item/100...o.order_list.order_list_main.5.610d1802MLVJdh

Holy smokes that is an insanely huge capacity battery for the Mavic 1 Pro. Please do let us know how long it flies, and how many miles it covers with this behemoth battery. I am guessing you'll see well over TEWNTY miles round trip with a 12,000 mAh battery.

By the way, and just in case you aren't already aware, it is absolutely VITAL that you must zip tie ALL batteries for ALL flights with your Mavic 1 Pro because this model, and the Mavic 2 Pro, rolled off the assembly line with weak battery retention clips that are prone to spontaneously detach on longer flights, resulting in a crash.

I lost THREE of these models before I adopted the zip-tie idea, after which I lost no more, even on the longest flights that for me were more than 13 miles round trip, traveled under Litchi's waypoint mission control, which always brings the drone back home after journeys extending far beyond RC signal reach

 

[GadgetGuy]

By the way, and just in case you aren't already aware, it is absolutely VITAL that you must zip tie ALL batteries for ALL flights with your Mavic 1 Pro because this model, and the Mavic 2 Pro, rolled off the assembly line with weak battery retention clips that are prone to spontaneously detach on longer flights, resulting in a crash.

Why should the length of the flight have anything to do with spontaneous detachment of the battery retention clips, unless the weight of the aftermarket extended battery is putting excessive pressure on the clips?

With OEM batteries, it is only the additional swelling of the batteries from heat that creates the pressure on the clips that can cause detachment. Granted, longer flights have the potential to generate more heat in the battery, resulting in more swelling, but unless the ambient air temperature is already high, a normal, unswelled battery should not be detaching, regardless of the flight duration.

That being said, no harm in zip-tying the battery for an extra measure of safety.

 

[Conservative Nihilist]

Why should the length of the flight have anything to do with spontaneous detachment of the battery retention clips, unless the weight of the aftermarket extended battery is putting excessive pressure on the clips?

With OEM batteries, it is only the additional swelling of the batteries from heat that creates the pressure on the clips that can cause detachment. Granted, longer flights have the potential to generate more heat in the battery, resulting in more swelling, but unless the ambient air temperature is already high, a normal, unswelled battery should not be detaching, regardless of the flight duration.

That being said, no harm in zip-tying the battery for an extra measure of safety.

My layman's speculation is that the battery clips of the Mavic 1 Pro and Mavic 2 Pro were fabricated with a polymer that becomes pliable as the drone's battery heats up during the final miles of longer flights. The added weight of bulkier extra-range after-market batteries for the M1P and M2P places even greater strain on those dicey battery clips, and I only wish I'd stumbled on the zip-tie idea in this forum a tad earlier than I eventually did. Now I use zip ties to secure my M1P and M2P drone batteries for each flight, regardless of whether the battery is a stock-sized one or a "double-decker" monster battery.

As you mentioned, the risk of battery clip failure is a compelling reason to discontinue using batteries that have even a subtle swelling. Due to fire concerns, I typically deep-six any swollen batteries and order replacement non-DJI batteries, now that OEM ones are becoming a rarity for these older DJI quadcopters.

 

[GadgetGuy]

My layman's speculation is that the battery clips of the Mavic 1 Pro and Mavic 2 Pro were fabricated with a polymer that becomes pliable as the drone's battery heats up during the final miles of longer flights. The added weight of bulkier extra-range after-market batteries for the M1P and M2P places even greater strain on those dicey battery clips, and I only wish I'd stumbled on the zip-tie idea in this forum a tad earlier than I eventually did. Now I use zip ties to secure my M1P and M2P drone batteries for each flight, regardless of whether the battery is a stock-sized one or a "double-decker" monster battery.

As you mentioned, the risk of battery clip failure is a compelling reason to discontinue using batteries that have even a subtle swelling. Due to fire concerns, I typically deep-six any swollen batteries and order replacement non-DJI batteries, now that OEM ones are becoming a rarity for these older DJI quadcopters.

Makes sense. Thanks for the clarification.
Zip ties for all!