Prometheus' doodads and thingamajigs

Name: SR-1 Plasma Pistols
Abilities: A pair of pistols that fire small super heated toroids of plasma that cause significant burns , melting or evaporation when in contact with matter. Charged by an ejectable internal power cell the SR-1 is capable of firing 5 smaller blasts (INT 4, fired one at a time) or a single more powerful blasted (INT 6) before depleting it's power source. Due to limited resources and the difficulty of adjusting earth based technology Prometheus never has more than 2 power cells at any given time (This includes the 2 in the pistols).
Description:

Spoiler:

Name: SR-2 Anti-Gravity Lifter
Abilities: A device that projects and traps objects within an antigravity field allowing Prometheus to move or thrown them. Capable of sustaining Anti-gravity fields up to 20 tons for as long as 15 seconds before needing to time recharge (Roughly STR 4, 4 post recharge time). Alternatively, it can surround and holding objects up to 50 tons in mass in place (STR 5 strength); however. at these masses it is not capable of moving the object in any way and after 5 seconds the power source is fully depleted and must be replaced. It posses a limited range of 5 ft. It must also be noted that the field is not instantaneous but projects outward from the end of the lifter roughly 4 seconds of time is required to cover the full 5ft distance.
Description:

Spoiler:

Name: SR-3 Personnel Control Grenades
Abilities: Grenades designed to a noise and light designed to disorient and temporarily blind individuals within a 10ft radius of the blast. Due to difficulties in replicating the technology on earth Prometheus never has more than 2 SR-3 Personnel Control Grenades on hand.
Description:

Spoiler:

Name: SR-4 Suppression Grenades
Abilities: Grenades designed to emit a large concussive blast with the shockwave extending to a 10ft radius (Power of 4?). Due to difficulties in replicating the technology on earth Prometheus never has more than 2 SR-4 Suppression Grenades on hand.
Description:

Spoiler:

I've tried (not sure if it was succesful) to balance this out by significantly limiting the number of uses the pistols and grenades posses and adding a number of limitations to the lifter.

This is fine.