In the Equipment folder the file misc_equip.ini
Notice the difference in capacity, charge_rate, thrust_capacity and thrust_charge_rate in examples ge_fighter_power01 through ge_fighter6_power01 and all the way up to infinite_power
All you have to do is find out which nickname goes with the ship.
If you haven't seen a list of all the ids_name check out The Lancers Reactor > Forums > Freelancer Editing: Freelancer Editing Tutorial Forum
Compilation of ALL IDS names, Mod Info, Tutorials, INI explination --
And The Lancers Reactor > Forums > Freelancer Editing Forum
*** IDS_NAMES *** to Friendly Names
[Power
nickname = infinite_power
ids_name = 263704
ids_info = 264704
volume = 0.000000
mass = 10
DA_archetype = equipment\models\hardware\li_fusion_reactor.3db
material_library = equipment\models\hardware.mat
capacity = 50000
charge_rate = 50000
thrust_capacity = 1000
thrust_charge_rate = 1000
lootable = false
[Power
nickname = ge_fighter_power01
ids_name = 263705
ids_info = 264705
volume = 0.000000
mass = 10
DA_archetype = equipment\models\hardware\li_fusion_reactor.3db
material_library = equipment\models\hardware.mat
capacity = 1000
charge_rate = 95
thrust_capacity = 1000
thrust_charge_rate = 100
lootable = false
[Power
nickname = ge_fighter2_power01
ids_name = 263706
ids_info = 264706
volume = 0.000000
mass = 10
DA_archetype = equipment\models\hardware\li_fusion_reactor.3db
material_library = equipment\models\hardware.mat
capacity = 1800
charge_rate = 183
thrust_capacity = 1000
thrust_charge_rate = 100
lootable = false
[Power
nickname = ge_fighter4_power01
ids_name = 263707
ids_info = 264707
volume = 0.000000
mass = 10
DA_archetype = equipment\models\hardware\li_fusion_reactor.3db
material_library = equipment\models\hardware.mat
capacity = 3400
charge_rate = 345
thrust_capacity = 1000
thrust_charge_rate = 100
lootable = false
[Power
nickname = ge_fighter5_power01
ids_name = 263708
ids_info = 264708
volume = 0.000000
mass = 10
DA_archetype = equipment\models\hardware\li_fusion_reactor.3db
material_library = equipment\models\hardware.mat
capacity = 6400
charge_rate = 645
thrust_capacity = 1000
thrust_charge_rate = 100
lootable = false
[Power
nickname = ge_fighter6_power01
ids_name = 263709
ids_info = 264709
volume = 0.000000
mass = 10
DA_archetype = equipment\models\hardware\li_fusion_reactor.3db
material_library = equipment\models\hardware.mat
capacity = 10400
charge_rate = 1040
thrust_capacity = 1000
thrust_charge_rate = 100
lootable = false
"One may say the eternal mystery of the world is its comprehensibility."
...........Albert Einstein (1879-1955); German-born US physicist.........