Tanking: Difference between revisions

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==== Understand Shield Recharge Rate ====

It is valuable to understand the mechanics ~~for~~ shield recharge rate. All ships have ~~some~~ shields, and all shields have a recharge rate so this concept applies to every ship shuttle and pod in Eve, and thus to every pilot who undocks~~, and is similar to~~ the recharge rate ~~of a ship's energy capacitor. In fact it~~ is the same as ~~your capacitor~~'s recharge rate.

It is valuable to understand the mechanics of shield recharge rate. All ships have shields, and all shields have a recharge rate. Therefore, this concept applies to every ship, shuttle, and pod in Eve, and thus to every pilot who undocks.

NOTE: The math behind the shield recharge rate calculation is the same as that used for a ship's [[capacitor recharge rate]].

In a ship's information screen, on the attributes tab, under the shield heading, is listed the total shield amount of the hull, and the shield recharge time. The recharge time expresses how long it will take to go from 0% shields to roughly 98% shields when the ship is sitting idle in space and no one is repairing the shields or damaging them. That last ~2% of your shields will take much longer.

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The ''actual'' behavior is that when the shield is near 0% or 100% it replenishes slower. The ''peak recharge'' rate will be 2.5x the average rate and will occur when the shields are damaged to 25% of shield maximum capacity.

Shield recharge rates above ~98% shield is extremely low. For ships with small shield capacity it is essentially non-~~existant~~. The shield recharge rate also drops sharply below 25% capacity. Once shields have been damaged beyond 25% the passive tank "breaks" and the ship dies shortly.

Shield recharge rates above ~98% shield is extremely low. For ships with small shield capacity it is essentially non-existent. The shield recharge rate also drops sharply below 25% capacity. Once shields have been damaged beyond 25% the passive tank "breaks" and the ship dies shortly.

[[File:Shield_recharge.png|400px|thumb|Measured shield HP during passive recharge from zero and theoretical shield HP from formula plotted. Click to enlarge.]]

[[File:Shield recharge rate.png|400px|thumb|Shield recharge rate as function of shield HP according to the formula. Click to enlarge.]]

As the shield takes damage, its level goes '''''down'''''. In response, the rate at which it rebuilds itself goes '''''up'''''. The increase in shield recharge rate continues until it peaks at 25% of shield capacity. At this threshold, the default ship Health Alert noise will sound, to warn the pilot that the shield is at its recharging limit. If it continues to take more damage than it can hold, the regeneration will drop off quickly. This means if constant damage is applied, the shield will regenerate less as it becomes empty, thus making it easier to shoot the armor below it.

As the shield takes damage, its level goes '''''down'''''. In response, the rate at which it rebuilds itself goes '''''up'''''. The increase in shield recharge rate continues until it peaks at 25% of shield capacity. At this threshold, the default ship Health Alert noise will sound to warn the pilot that the shield is at its recharging limit. If it continues to take more damage than it can hold, the regeneration will drop off quickly. This means if constant damage is applied, the shield will regenerate less as it becomes empty, thus making it easier to shoot the armor below it.

{{ note box | THE MAIN POINT: In combat the shield will recharge at an increasing rate until 25% of its capacity remains; then the rate will fall off quickly towards zero.}}

The math for shield regeneration is exactly the same as ~~for~~ the [[capacitor recharge rate]]. Two numerical attributes are required: shield capacity, and shield recharge time. These are both displayed in the ship's "show info" attributes panel in-game, below its capacity. Note that modules that refer to "recharge rate" modify the recharge time number, not the raw regeneration in HP/s.

The math for shield regeneration is exactly the same as that of the [[capacitor recharge rate]]. Two numerical attributes are required: shield capacity, and shield recharge time. These are both displayed in the ship's "show info" attributes panel in-game, below its capacity. Note that modules that refer to "recharge rate" modify the recharge time number, not the raw regeneration in HP/s.

[[File:EVE Cap Recharge Rate Diff Formula.png|center|300px]]

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;Consequences

The fact these attributes are both set has some interesting consequences. Notably for this calculation, recharge time is ''not'' dependent on anything else, including maximum shield capacity – as you might have intuitively expected. This has the effect that if two ships have the same "recharge time" attribute, and one has more capacity, then the one with the larger capacity will get more raw HP/s regeneration, and appear to 'repair faster', despite reaching its maximum level in the same time. In simple terms, recharge is calculated ''by percentage'' first; which is then translated into HP/s of regeneration. So maximum capacity indirectly affects the amount of HP/sec regenerated, having the effect that Extender modules increase regeneration, and flux coils become much less useful compared to Rechargers or Power Relays.

The fact that these attributes are both set has some interesting consequences. Notably for this calculation, recharge time is ''not'' dependent on anything else, including maximum shield capacity--as you might have intuitively expected. This has the effect that if two ships have the same "recharge time" attribute, and one has more capacity, then the one with the larger capacity will get more raw HP/s regeneration, and appear to 'repair faster' despite reaching its maximum level in the same time. In simple terms, recharge is calculated ''by percentage'' first, which is then translated into HP/s of regeneration. So maximum capacity indirectly affects the amount of HP/sec regenerated, having the effect that Extender modules increase regeneration, and flux coils become much less useful compared to Rechargers or Power Relays.

;Calculating Average rate

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Average HP/s = Shield maximum / Recharge time

The peak recharge Rate is 250% of average shield recharge. It occurs when the capacity of the shield is at 25% of its maximum value. Shield recharge rate drops rapidly below 25% shield capacity.

The peak recharge Rate is 250% of average shield recharge. It occurs when the capacity of the shield is at 25% of its maximum value. Shield recharge rate drops rapidly once the shield falls below 25% of shield capacity.

=== Fitting a shield tank ===

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 ==== Understand Shield Recharge Rate ====
-It is valuable to understand the mechanics for shield recharge rate. All ships have some shields, and all shields have a recharge rate so this concept applies to every ship shuttle and pod in Eve, and thus to every pilot who undocks, and is similar to the recharge rate of a ship's energy capacitor.  In fact it is the same as your capacitor's recharge rate.
+It is valuable to understand the mechanics of shield recharge rate. All ships have shields, and all shields have a recharge rate. Therefore, this concept applies to every ship, shuttle, and pod in Eve, and thus to every pilot who undocks.
+NOTE: The math behind the shield recharge rate calculation is the same as that used for a ship's [[capacitor recharge rate]].
 In a ship's information screen, on the attributes tab, under the shield heading, is listed the total shield amount of the hull, and the shield recharge time. The recharge time expresses how long it will take to go from 0% shields to roughly 98% shields when the ship is sitting idle in space and no one is repairing the shields or damaging them. That last ~2% of your shields will take much longer.
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 The ''actual'' behavior is that when the shield is near 0% or 100% it replenishes slower. The ''peak recharge'' rate will be 2.5x the average rate and will occur when the shields are damaged to 25% of shield maximum capacity.
-Shield recharge rates above ~98% shield is extremely low. For ships with small shield capacity it is essentially non-existant. The shield recharge rate also drops sharply below 25% capacity. Once shields have been damaged beyond 25% the passive tank "breaks" and the ship dies shortly.
+Shield recharge rates above ~98% shield is extremely low. For ships with small shield capacity it is essentially non-existent. The shield recharge rate also drops sharply below 25% capacity. Once shields have been damaged beyond 25% the passive tank "breaks" and the ship dies shortly.
 [[File:Shield_recharge.png|400px|thumb|Measured shield HP during passive recharge from zero and theoretical shield HP from formula plotted. Click to enlarge.]]
 [[File:Shield recharge rate.png|400px|thumb|Shield recharge rate as function of shield HP according to the formula. Click to enlarge.]]
-As the shield takes damage, its level goes '''''down'''''. In response, the rate at which it rebuilds itself goes '''''up'''''. The increase in shield recharge rate continues until it peaks at 25% of shield capacity. At this threshold, the default ship Health Alert noise will sound, to warn the pilot that the shield is at its recharging limit. If it continues to take more damage than it can hold, the regeneration will drop off quickly. This means if constant damage is applied, the shield will regenerate less as it becomes empty, thus making it easier to shoot the armor below it.
+As the shield takes damage, its level goes '''''down'''''. In response, the rate at which it rebuilds itself goes '''''up'''''. The increase in shield recharge rate continues until it peaks at 25% of shield capacity. At this threshold, the default ship Health Alert noise will sound to warn the pilot that the shield is at its recharging limit. If it continues to take more damage than it can hold, the regeneration will drop off quickly. This means if constant damage is applied, the shield will regenerate less as it becomes empty, thus making it easier to shoot the armor below it.
 {{ note box | THE MAIN POINT: In combat the shield will recharge at an increasing rate until 25% of its capacity remains; then the rate will fall off quickly towards zero.}}
-The math for shield regeneration is exactly the same as for the [[capacitor recharge rate]]. Two numerical attributes are required: shield capacity, and shield recharge time. These are both displayed in the ship's "show info" attributes panel in-game, below its capacity. Note that modules that refer to "recharge rate" modify the recharge time number, not the raw regeneration in HP/s.
+The math for shield regeneration is exactly the same as that of the [[capacitor recharge rate]]. Two numerical attributes are required: shield capacity, and shield recharge time. These are both displayed in the ship's "show info" attributes panel in-game, below its capacity. Note that modules that refer to "recharge rate" modify the recharge time number, not the raw regeneration in HP/s.
 [[File:EVE Cap Recharge Rate Diff Formula.png|center|300px]]<!-- TeX: {\color{White}{dC\over dt}={2C_\mathrm{max}\over\tau}\left(\sqrt{C\over C_{\mathrm{max}}}-{C\over C_\mathrm{max}}\right)} -->
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 ;Consequences
-The fact these attributes are both set has some interesting consequences. Notably for this calculation, recharge time is ''not'' dependent on anything else, including maximum shield capacity – as you might have intuitively expected. This has the effect that if two ships have the same "recharge time" attribute, and one has more capacity, then the one with the larger capacity will get more raw HP/s regeneration, and appear to 'repair faster', despite reaching its maximum level in the same time. In simple terms, recharge is calculated ''by percentage'' first; which is then translated into HP/s of regeneration. So maximum capacity indirectly affects the amount of HP/sec regenerated, having the effect that Extender modules increase regeneration, and flux coils become much less useful compared to Rechargers or Power Relays.
+The fact that these attributes are both set has some interesting consequences. Notably for this calculation, recharge time is ''not'' dependent on anything else, including maximum shield capacity--as you might have intuitively expected. This has the effect that if two ships have the same "recharge time" attribute, and one has more capacity, then the one with the larger capacity will get more raw HP/s regeneration, and appear to 'repair faster' despite reaching its maximum level in the same time. In simple terms, recharge is calculated ''by percentage'' first, which is then translated into HP/s of regeneration. So maximum capacity indirectly affects the amount of HP/sec regenerated, having the effect that Extender modules increase regeneration, and flux coils become much less useful compared to Rechargers or Power Relays.
 ;Calculating Average rate
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 Average HP/s = Shield maximum / Recharge time
-The peak recharge Rate is 250% of average shield recharge. It occurs when the capacity of the shield is at 25% of its maximum value. Shield recharge rate drops rapidly below 25% shield capacity.
+The peak recharge Rate is 250% of average shield recharge. It occurs when the capacity of the shield is at 25% of its maximum value. Shield recharge rate drops rapidly once the shield falls below 25% of shield capacity.
 === Fitting a shield tank ===