We got there a little bit of a special request of the manufacturer of LIPO Greatmax via the website contact form.
We did not know this manufacturer from China.
Currently there are no distributors in Europe.
The main market Greatmax is focused for now on the US.
I had to search on the net before falling on this video Corporate which also sums up very well how LIPO are made.
On inquiry, we accepted and the manufacturer put to me two copies of 1300mAh 4s model 65C, just to compare with other Lipos.
The other copy has been tested by Loke-3pand the article is availablehere !
They were eerily reminiscent to another brand!
The dimensions of the Greatmaxare 72,8mm x 33,9mm x 30,4mm and the weight is 149gr.
Compared to 167gr of tattu 1300 and the dimensions of 72mm x 34mm x 28mm
And 155gr of Bonka and dimensions of 34mm x 75,9mm x 31,5mm, the gain is obvious!
Visual comparison of lipos
The weight difference is explained by several factors!
1 / Greatmax uses the lipo cable 14AWG or Tattu Bonka and use them logically
given the current consumption of our configurations 12AWG.
2 / protective foam The establishment at the connection of the cells is less than the Greatmax compared to the other 2.
3 / The length of the cables.
First test Greatmax in flight:
Before you do a more thorough comparison, I decided to do a test flight of the Greatmax (Lapped) to enjoy the feel and performance! Of course the same configuration will be used for testing (armattan RaceSpec) whose review & build will happen soon, it features the f3v4 FULL AIO card with a current sensor! engines are Brother Hobby Returner R3 2206-2600kv - 30 amp ESC bee multishot with bladed HQ DPS1 5x4x3.
The feeling on the first flight is really excellent and performance really surprised me!
What really surprised me was the constant power available from the beginning to the end of the cycle of lipo, or the Bonka collapses on the performance end of the cycle, here is ultra-linear.
No abnormal heating or swelling was found in 10 cycles that I made with.
Weight gain it brings compared against the Tattu and Bonka is very significant also.
It is definitely on quality LIPO equivalent to leading brands.
Here's the video of the first test flight!
Compare flight GreatMax / Tattu / Bonka (DVR FatShark)
The video above is used to compare the behavior of cells of each brand according to the flight time.
I checked the temperature of lipos after each flight to compare!
Comparison made 3 flights on the same day with an outside temperature of -1 °.
Greatmax 1300mah
Flight time: 3min 30 to 26 degrees
Tattu 1300mah
Flight time: 3min 18 to 27.8 degrees
Bonka 1300mah
Flight time: 2min 57 to 32.8 degrees
inflated late flight ...
For the price we turn around of $ 15 without shipping cost. China's coming, I can not imagine with the regulations for LIPO what it would mean to bring 5 pieces.
An alternative to large super-known brands to date!
Small reminder passage
The table on the minimum voltage limits for your LIPO!
A little trick if your card has flying buzzer to warn you that you are 10%.
LIPO buzzer available here LIPO BUZZER
The operating principle is very simple, just plug the buzzer to your LIPO via plug balancing and fix it with Velcro or elastic.
And to control the voltage and display other characteristics we advise you this:
The cellmeter available hereCellMeter
We did not know this manufacturer from China.
Currently there are no distributors in Europe.
The main market Greatmax is focused for now on the US.
I had to search on the net before falling on this video Corporate which also sums up very well how LIPO are made.
On inquiry, we accepted and the manufacturer put to me two copies of 1300mAh 4s model 65C, just to compare with other Lipos.
The other copy has been tested by Loke-3pand the article is availablehere !
They were eerily reminiscent to another brand!
The dimensions of the Greatmaxare 72,8mm x 33,9mm x 30,4mm and the weight is 149gr.
Compared to 167gr of tattu 1300 and the dimensions of 72mm x 34mm x 28mm
And 155gr of Bonka and dimensions of 34mm x 75,9mm x 31,5mm, the gain is obvious!
Visual comparison of lipos
The weight difference is explained by several factors!
1 / Greatmax uses the lipo cable 14AWG or Tattu Bonka and use them logically
given the current consumption of our configurations 12AWG.
2 / protective foam The establishment at the connection of the cells is less than the Greatmax compared to the other 2.
3 / The length of the cables.
First test Greatmax in flight:
Before you do a more thorough comparison, I decided to do a test flight of the Greatmax (Lapped) to enjoy the feel and performance! Of course the same configuration will be used for testing (armattan RaceSpec) whose review & build will happen soon, it features the f3v4 FULL AIO card with a current sensor! engines are Brother Hobby Returner R3 2206-2600kv - 30 amp ESC bee multishot with bladed HQ DPS1 5x4x3.
The feeling on the first flight is really excellent and performance really surprised me!
What really surprised me was the constant power available from the beginning to the end of the cycle of lipo, or the Bonka collapses on the performance end of the cycle, here is ultra-linear.
No abnormal heating or swelling was found in 10 cycles that I made with.
Weight gain it brings compared against the Tattu and Bonka is very significant also.
It is definitely on quality LIPO equivalent to leading brands.
Here's the video of the first test flight!
Compare flight GreatMax / Tattu / Bonka (DVR FatShark)
The video above is used to compare the behavior of cells of each brand according to the flight time.
I checked the temperature of lipos after each flight to compare!
Comparison made 3 flights on the same day with an outside temperature of -1 °.
Greatmax 1300mah
Flight time: 3min 30 to 26 degrees
Tattu 1300mah
Flight time: 3min 18 to 27.8 degrees
Bonka 1300mah
Flight time: 2min 57 to 32.8 degrees
inflated late flight ...
For the price we turn around of $ 15 without shipping cost. China's coming, I can not imagine with the regulations for LIPO what it would mean to bring 5 pieces.
An alternative to large super-known brands to date!
Small reminder passage
The table on the minimum voltage limits for your LIPO!
A little trick if your card has flying buzzer to warn you that you are 10%.
LIPO buzzer available here LIPO BUZZER
The operating principle is very simple, just plug the buzzer to your LIPO via plug balancing and fix it with Velcro or elastic.
And to control the voltage and display other characteristics we advise you this:
The cellmeter available hereCellMeter