 | Industry Markets | | Battery reference data is available for both the Stationary Power and the Transportation markets.
Select the appropriate battery application type. |
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| Determining Your Reference Values - General: | | Batteries with the same make, model, power rating and age (date code within 6 months) will generally conform to the model below:
1. New batteries will test within 10% of each other (+/- 5%) in forming a healthy string.
2. Batteries testing within 20% of each other (+/- 10%) still tend to perform equally well during a timed discharge test.
3. A battery that tests 30+% below the average conductance of the highest 10 cells in a string will have difficulty making 80% of its rated capacity. |
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| Stationary Power Conductance Reference Values | | - Values are typical averages to be used as general guidelines only; Midtronics encourages customers to establish their own relevant testing values.
- These values are subject to change through Midtronics and battery manufacturer refinement.
- Generally, a sample of 30 new or healthy batteries is tested to obtain a value representative of a new battery on-line after 90 days from installation.
- Test data was obtained at or adjusted to a nominal 25°C (77°F) for consistency. Temperature changes strongly affect measured conductance.
- Sizable differences between conductance value of a specific battery and its value listed can result from many variations in the way a battery string (system) was treated, installed and/or maintained. It is imperative that ALL SITE TEST DATA SHOULD BE RECORDED and made available for future on-site visits and long-term site reference. |
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