David Thackray Tevva Motors Limited

10. 130 km 160 km 190 km 60 km
65 kms
≤20 km >320 km
Serviceable by pure BEV
Serviceability only achieved by ReX BEV
Serviceable by pure BEV if DC
rapid charge options exist
Daily mileage

12. Lithium Iron Phosphate (LiP04 / LFP)
80kWh in 2 packs
Designed and manufactured in-house
Passed UNECE Reg 100; Rev, 2 parts 1 & 2
Automotive life – to 80% of initial capacity
Warranted for 2,000 cycles – discharging from 100% to 10%
If at exactly 80% after 2,000 cycles; 129,600 total kWh charged and
discharged
Assume battery capex is $20,000
‘Conventional wisdom’ assumes that at (say) 7 years old (285
cycles/year). The battery has minimal residual value – perhaps
$2,000 (10%)
Basic Specifications

13. 0
10
20
30
40
50
60
70
80
90
0 2000 4000 6000 8000 10000 12000
Charge/discharge cycles completed
Battery
capacity
(kWh)
Battery degrades to 80% of starting
value over 2,000 cycles
20kWh capacity
BMW i3 – 20 kWh battery

14. Automotive
/
‘on-vehicle’
life
0
10
20
30
40
50
60
70
80
90
0 2000 4000 6000 8000 10000 12000
Charge/discharge cycles completed
Battery
capacity
(kWh)
129,600 kWh
Conventional wisdom’ assumes that at (say) 7
years old (285 cycles/year). The battery has
minimal residual value – perhaps $2,000 (10%)
Depreciation would therefore be $18,000
$18,000 / 129,600 kWh = $0.139 per kWh/cycle

15. Automotive
/
‘on-vehicle’
life
Second life as ‘static storage’
0
10
20
30
40
50
60
70
80
90
0 2000 4000 6000 8000 10000 12000
Charge/discharge cycles completed
Battery
capacity
(kWh)
129,600 kWh
73%
354,171 kWh
ASSUME BATTERY NOW DEPRECIATED TO ZERO
Depreciation calculation now is
$20,000 / 483,770 kWh = $0.041
4.1 cents per kWh charged and discharged –

16. THREE factors drive the TCO calculation
FUEL cost (Diesel vs. Electricity vs. H2)
MAINTENANCE cost
CAPITAL cost (Depreciation)
Time or miles travelled or energy used
Cost
Capex
Opex
EV
Trad. diesel
Stretching useful life from (e.g.) 2,000 cycles to >10,000 cycles can cut the effective cost of
the battery by almost three-quarters
In turn, this can cut the net depreciation cost of the EV by around 20% - significantly
reducing the utilisation needed to achieve TCO parity with diesel

17. THREE factors drive the TCO calculation
FUEL cost (Diesel vs. Electricity vs. H2)
MAINTENANCE cost
CAPITAL cost (Depreciation)
Time or miles travelled or energy used
Cost
Capex
Opex
EV
Trad. diesel
Stretching useful life from (e.g.) 2,000 cycles to >10,000 cycles can cut the effective cost of
the battery by almost three-quarters
In turn, this can cut the net depreciation cost of the EV by around 20% - significantly
reducing the utilisation needed to achieve TCO parity with diesel

21. www.tevva.com