| Battery usage | Hours | Mins | Trickle | Time | Boost | Time | Current | Power | Typical | Via 12V | ||||
| Type | AH | Application | Use @ | Typ. I | Use @ | Peak | Charge | Charge | Charge | Charge | for 6hrs | for 6hrs | TX PWR | to 6V |
| Gel | 7 | Standby/ Low power /UPS | 20 | 0.35 | 10.71 | 28 | 0.16 | 58.50 | 0.88 | 10.40 | 0.97 | 12.44 | 6.84 | 1.88 |
| Gel | 12 | Standby/ Low power /UPS | 20 | 0.60 | 10.71 | 48 | 0.27 | 58.50 | 1.50 | 10.40 | 1.67 | 21.33 | 11.73 | 3.23 |
| Gel | 17 | Standby/ Low power /UPS | 20 | 0.85 | 10.71 | 68 | 0.38 | 58.50 | 2.13 | 10.40 | 2.36 | 30.22 | 16.62 | 4.57 |
| Gel | 45 | Standby/ Low power /UPS | 20 | 2.25 | 10.71 | 180 | 1.00 | 58.50 | 5.63 | 10.40 | 6.25 | 80.00 | 44.00 | 12.10 |
| Car | 45 | Deep cyclic/ high power | 2 | 22.50 | 13.85 | 150 | 2.25 | 22.00 | 18.00 | 3.25 | 7.89 | 105.79 | 58.18 | 16.00 |
| Car | 65 | Deep cyclic/ high power | 2 | 32.50 | 20.00 | 150 | 3.25 | 22.00 | 26.00 | 3.25 | 11.40 | 152.81 | 84.04 | 23.11 |
| Truck | 160 | Deep cyclic/ high power | 2 | 80.00 | 21.10 | 350 | 8.00 | 22.00 | 64.00 | 3.25 | 28.07 | 376.14 | 206.88 | 56.89 |
| Notes: | ||||||||||||||
| 1 | Typical "I" is for reasonable battery cycle life | |||||||||||||
| 2 | Trickle Charge is for reasonable battery life | |||||||||||||
| 3 | Above "peak" current catastrophic failure may occur | |||||||||||||
| 4 | Time on BOOST must not be exceeded at all, without risk of catastrophic failure | |||||||||||||
| 5 | Boost charge may be close to safe charge limit. | |||||||||||||
| 6 | TX power is a fraction of consummed power on FM. Add also consumption of rest of rig. | |||||||||||||
| 7 | Handies / QRP rigs etc may use 6V internally, so half the power is wasted unless a switching 12V / 6V reg. is used (most are linear) | |||||||||||||