NiMH Alkaline Li Ion
Rechargeable Nickel Metal Hydride Limited shelf-life loses 1% of deliverable energy per day when stored at room temperature Stored at 70 degrees F (20 C) NiMH batteries will lose up to 40% of their charge within a month. If they are stored at a higher temperature, they will self discharge at an even higher rate. Stored at a lower temperature they self discharge at a lower rate
AA GE/SANYO eneloop (4 for $15) 2000 mAh 6 mon 90% 1 year 85% AA Titanium Power Enduro (4 for $10) 2100 mAh 1-2% per month, 20% per year AccuEvolution (Accupower) Uniross Hybrio Rayovac Hybrid Rayovac Hybrid The capacity loss in the first week seems to be greater than the eneloop. The Enduro cells have a slightly higher self discharge rate compared to the Eneloop cells.Sanyo introduced a new version of its Eneloop batteries with improved durability. Sanyo claims that the new Eneloops retain 75% of their charge after 3 years and can be recharged up to 1500 times.
old eneloop (HR-3UTG / HR-4UTG) 1000 charging cycles 85 % capacity after 1 year of storage suitable for temperatures as low as -10°C pre-charged by regular energy new eneloop (HR-3UTGA / HR-4UTGA) 1500 charging cycles 75% capacity after 3 years of storage suitable for temperatures as low as -20°C pre-charged by solar energy
Titanium AA 2700 mAh Sanyo AA 2700 mAh Energizer AA 2500 mAh Duracell AA 2300 mAh
Titanium AAA 1000 mAh Energizer AAA 850 mAh
CR123A
Surefire SF123A 1400mAh Titanium CR123A lithium batteries 1300mAh, CR123A Tenergy Lithium Photo Battery 1300mAh Sanyo CR123A 1400mAh Golston 1400mAh Energizer EL123A Lithium 3V Battery Sanyo CR123A Lithium 3V Batter Tysonic CR123A Lithium 3V Battery Panasonic
Rechargable
Tenenergy RCR123A 3.0V 900mAh Rechargeable Li-Ion Battery 4 RCR123A 3.0V 900mAh Rechargeable Li-Ion Protected Batteries with a Smart Charger
Trickle chargeTG2800 Charger ($40)
4 AA 2500 mAh 330 mins 4 AAA 900 mAh 250 mins Trickle chargeTP-1HR ($32)
4 AA 2600 mAh 75 mins 4 AAA 800 mAh 50 mins
Titanium AAA 784/800 768/800 759/800 724/800 Eneloop AAA 798/800 798/800 784/800 Titanium AA 2.12/2.1 2.07/2.1 2.07/2.1 2.1/2.1 Eneloop AA 1.955/2.0 1.930/2.0 1.924/2000 Energizer AA 941/2.5 1.058/2.5 AA 2.37/2.5 AA 2.47/2.5 2.50/2.5 763/2.5 2.48/2.5 Rayovac AA 1.830/1.8 Duracell AA 610/2.3 AA 1.593/2.3 AA 1.701/2.3Tests:
1) Remaining charge on Titanium AA (in digital thermometer) 2) Fully charged Energizer in digital thermometer 07/02/2007Notes:
1) Energizer batteries showed NULL in charger Let sit in energizer charger for a little bit then put in the BC-900. Registered a charge. 2) Titanium batteries in digital thermometer seemed to drain quickly. 3) Battery in clock seemed to drain quickly.