Garmata EEB battery box says it can hold 400pcs 18650 cells. I think I can fit more.

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Hi Yall,
I'm just playing with the idea of building an e-bike I like the Garmata EBB frame and they sell a battery box battery they claim with its dimensions it can hold 400pcs 18650 cells with battery holders/spacers the box seems pretty deep dimensions are 42x14x24.2mm

Links:
Large Battery Box and Battery Combo
Large Battery Box only
here are their specs:
Panasonic GA Enduroebike battery pack 72v70AH

20s20p:
Configuration: 20S20P Panasonic GA A Grade 18650 li-ion cell
Weight: 25kg(in stainless steel L case)
Rated voltage 72v
Max voltage 84v
Undervoltage 60v
Rated discharge current 150A
Max continuous discharge current (5 sec) 200A
Recommended charge current 10A
Max charge current 15A
Rated capacity 70ah
Charge connector XLR Female
DIscharge connector Anderson SB50
BMS function: Cell balancing, Over-current, Over-discharge, Over-charge,
Temperature protection, Secondary protection.
Compatible with: EEB L battery box.


Using an online Battery configurator looks like I can easily fit 500pcs 18650 in the battery box I could still do the same 72V 20s24p configuration for more Ah or could do a 96V 26s18p

Playing with the idea of using LTO Cells sure there more money but they have more charge cycles and faster charge times and can charge at 100A

LTO 96V 40s12p or LTO 72V 30s16p

Choices as I'm building a parts list for the bike and I'm looking at running the following configuration with the Far-driver ND96850D and QS273 5T motor

Playing with the idea of using LTO cells:

LTO 96V 40s12p
Number of cells in the pack480 cells
Nominal voltage of pack96.00V
Minimum pack voltage60.00V
Maximum pack voltage112.00V
Max discharge current18.00A
Estimated capacity of pack (Ah)18.00 Ah

Or

LTO 72V 30s16p
Number of cells in the pack480 cells
Nominal voltage of pack72.00V
Minimum pack voltage45.00V
Maximum pack voltage84.00V
Max discharge current24.00A
Estimated capacity of pack (Ah)24.00 Ah
Estimated capacity of pack (Wh)1728 Wh
Estimated capacity of pack (kWh)1.73 kWh

HAKADI LTO CELLS

LTO Battery CELL Specification​

Nominal Voltage: 2.4V
Nominal capacity: 1500mah
Minimum capacity: 1450mah
Charge cut-off voltage: 2.8V
Discharge cut-off voltage: 1.5V
Internal resistance: ≤30mΩ
Standard charge current: 1500mah (1C)
Max charge current: 15000mah (10C)
Standard discharge current: 1500mah (1C)
Max continuous discharge current: 15000mah (10C)
Operating Temperature:
Charge 0~45℃, Discharge -40~55℃
Cycle times: More than 20000 times
Battery specification: 18*65mm
Battery weight:45±5g

1708683140575.png
 
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Also the 400 cell count includes space as shown. You have no space between cells in your 250 cell design. if one cell goes into thermal runaway they all might go.
later Floyd
Screenshot 2024-02-23 at 9.22.11 AM.png
 
Assume you know the energy density of LTO is half that of other lithium chemistries ?
Yes exactly just brainstorming the configuration.

My LTO cell pack configuration:
LTO 96V 40s12p
Number of cells in the pack480 cells
Nominal voltage of pack96.00V
Minimum pack voltage60.00V
Maximum pack voltage112.00V
Max discharge current18.00A
Estimated capacity of pack (Ah)18.00 Ah

LTO 72V 30s16p
Number of cells in the pack480 cells
Nominal voltage of pack72.00V
Minimum pack voltage45.00V
Maximum pack voltage84.00V
Max discharge current24.00A
Estimated capacity of pack (Ah)24.00 Ah
Estimated capacity of pack (Wh)1728 Wh
Estimated capacity of pack (kWh)1.73 kWh

HAKADI LTO CELLS
LTO Battery CELL Specification​

Nominal Voltage: 2.4V
Nominal capacity: 1500mah
Minimum capacity: 1450mah
Charge cut-off voltage: 2.8V
Discharge cut-off voltage: 1.5V
Internal resistance: ≤30mΩ
Standard charge current: 1500mah (1C)
Max charge current: 15000mah (10C)
Standard discharge current: 1500mah (1C)
Max continuous discharge current: 15000mah (10C)
Operating Temperature:
Charge 0~45℃, Discharge -40~55℃
Cycle times: More than 20000 times
Battery specification: 18*65mm
Battery weight:45±5g
 
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