Month: April 2026

Short answer: for most people the premium a 1050mAh carries over a 950mAh is not good value. But if your pattern is two batteries at most per outing with no convenient place to swap, it is. The reason is simple: the two differ by a hundred milliamp-hours, about ten percent, which usually works out to a few dozen extra frames, while the extra money would buy a good part of a second 950mAh. What really decides the choice is not the capacity number but how many batteries you are willing to carry.

First, translate 100mAh into frames

A 100mAh difference in rated capacity is theoretically a 10.5% gain. But the usable window inside a camera is not the full capacity: the tail before cutoff voltage cannot be drawn, and the body’s estimate is conservative, so the practical gain is usually between 8% and 10%.

Frames are more intuitive. If a 950mAh manages roughly 450 to 600 frames under normal shooting, a 1050mAh lands around 500 to 650. In other words the extra is a few dozen frames of headroom in a day, enough for one more small scene, not enough to leave a battery at home.

How to work out cost per shot

Do not compare total price divided by total capacity. That spreads the cost of the shell, protection board, and housing across the figure and hides the marginal return. What matters is the increment: how many additional frames the extra money buys.

1. Note the real price difference between the two tiers. Estimating on the order of “a few tens more” is fine; you do not need it to the dollar.
2. Subtract the midpoint of the 950’s frame range from the midpoint of the 1050’s. The increment is usually around fifty frames.
3. Divide the extra frames by the price difference to get frames per extra dollar. The figure usually lands at one to two frames per dollar.
4. Now run the alternative: spend the same money on a second 950mAh. That buys several hundred extra frames, or more than five per dollar.

The conclusion follows. On pure runtime efficiency, the marginal return from paying more for a 1050 is clearly below adding another 950. The 1050’s value is not efficiency but the act of carrying one fewer battery: the volume, the weight, the swap, and the seconds you lose doing it.

Three kinds of shooter, three conclusions

If you carry only two batteries, take the 1050. Your constraint is count, not total capacity. Two 1050s give you roughly what two 950s give plus a bit more, and that bit more is exactly what covers the unexpected shooting before you wrap.

If you habitually carry three or more, take the 950. When count is plentiful, per-battery capacity barely affects the outcome and rotation rhythm dominates. Three 950s already exceed two 1050s in total capacity at lower cost, and swapping is one extra motion.

If you shoot mostly video, look at it separately. Video is a continuous load with less tolerance for voltage sag at the end, so more capacity means the low-battery warning comes later and the finish is calmer. Even with three packs, this group can keep the 1050 in the primary slot.

Two hidden costs beyond capacity

The first is charging time. On the same dock, a 1050 takes ten or twenty minutes longer to fill. If you charge everything overnight, the difference disappears; if you top up between setups, time is a real cost.

The second is consistency. Mixing capacities makes the body’s gauge jump around and rotation planning gets messy. Running one tier is simpler, which argues for standardizing rather than buying one 950 and one 1050.

YO’s LP-E17 comes in 750, 950, and 1050mAh so that you can choose by how many packs you carry rather than by “bigger is better.” If you are still matching tiers to bodies, start with the capacity and compatibility guide, then compare specific products in the 1050mAh category.

FAQ

How many more frames does a 1050mAh give than a 950mAh?

A few dozen under normal shooting, on the order of fifty. Burst shooting, stabilization, and cold weather narrow the gap; static composition and less chimping widen it. Do not extrapolate linearly from the percentage, because discharge efficiency at the tail is not uniform.

Is paying a few tens more for 100mAh a waste of money?

Not entirely. If it lets you leave a battery at home, the saved weight and swap time have value. But if your bag already holds three or four packs, the extra frames are unlikely to be used, and then it is not worth it.

Can I run one 950 and one 1050 together?

Yes. Voltage and contacts match and the body does not distinguish them. Be aware that the gauge logic differs slightly and the low-battery warning will trip at different points, so charge both fully before important work and save the larger one for the second half.

On a tight budget, which should I buy first?

Buy the 950mAh first and put the money toward a second one. Two 950s beat one 1050 on both total runtime and flexibility; only when your bag space or carry habit strictly limits you to two packs should the 1050 come first.

Short answer: most people will not notice. Against the original at about 1040mAh the difference is negligible, and against 950mAh it is usually under fifteen grams, roughly a coin or two. Inside a body weighing more than four hundred grams that is under four percent, and it does not produce a clear “this got heavier” sensation during normal handling. What actually gets amplified is not absolute weight but the center of gravity and the way you hold the camera.

Let’s get the numbers straight

The original Canon LP-E17 weighs on the order of forty-five grams, on the light side for its class. Third-party high-capacity versions carry more cell material and therefore weigh a little more, but the spread is limited: from 750mAh to 1050mAh the difference for the whole battery is usually under fifteen grams, never a doubling.

A common misunderstanding is that a forty percent capacity increase means a forty percent weight increase. In practice most of a battery’s mass is the shell, the protection board, and the tabs; the cell is only part of it, and higher-capacity cells also tend to have better energy density. The weight penalty for added capacity is therefore non-linear and flattens out as you go up.

For any individual product the rated weight is whatever the maker publishes, and batches and protection-board designs will vary by a few grams. Thinking in terms of “under fifteen grams” is enough; there is no point chasing single digits.

Absolute weight matters less than proportion

The same battery feels entirely different depending on the body it goes into. The lighter the body, the larger the battery’s share and the more noticeable the shift in balance. A rough comparison by body weight follows.

The pattern is that lighter bodies and smaller lenses make the battery’s weight easier to feel. Fit a fast zoom and the body-plus-lens combination passes a kilogram, at which point fifteen grams is completely submerged. Any discussion of whether you can feel it has to start by naming the body and the lens.

Three situations that magnify the difference

Carrying the camera on a strap for hours. With the camera hanging from your neck, the strap carries everything, and any increment accumulates into soreness over a day. Fifteen grams is no longer fifteen grams; it is fifteen grams times a whole day. Hiking, street shooting, and trade shows are where weight savings pay off most clearly.

Shooting one-handed with the arm raised. With the arm extended, torque scales with arm length, and a battery sitting behind the body’s center of gravity produces a lever effect that tires the wrist sooner. On a small body like the 200D with a pancake lens, the difference is perceptible.

Portrait orientation. Rotating the camera moves your grip, so weight on the battery-compartment side sits farther from your support point and the body feels more lopsided. This is one reason many portrait shooters add a grip to bring the balance back.

Conversely, on a tripod, on a gimbal, or carried cross-body on a sling, the structure absorbs the battery weight almost entirely and the question is moot.

How to check for yourself instead of guessing

1. Weigh both batteries on a kitchen scale and write down the grams. This establishes the real difference and keeps you from being led by the assumption that more capacity must mean more weight.
2. Set the camera to the same state, fit the 950mAh, hold it out one-handed for twenty seconds, then repeat with the 1050mAh. Do it with your eyes closed to avoid priming yourself.
3. Walk around for ten minutes with the camera on a strap and note whether the pressure points behind your neck and on your shoulder change. This is the closest test to real use.
4. If you cannot tell the two apart either time, weight is not a selection criterion for your body and your shooting style, so choose on capacity and price.

The value of this routine is that it removes the psychological factor. People instinctively pay more attention to something new, more expensive, and higher-capacity; closing your eyes and fixing the duration cancels part of that bias.

One more thing to remember: weight can be managed with a strap, a different grip, or a lighter lens. Capacity cannot. A battery that runs out a few dozen frames early may cost you a shot. So the order of selection should be to decide the total runtime you need, then pick the lightest tier that meets it, rather than the other way around.

YO’s LP-E17 splits capacity into 750, 950, and 1050mAh. The 750 tier suits light travel where you shoot mostly stills and can recharge at the hotel that night; the 1050 suits long days away from power. For the exact body list, see the capacity and compatibility guide, or compare the 750mAh category with the 1050mAh category directly.

FAQ

Will 1050mAh make the camera heavier or more tiring to hold?

On bodies above four hundred grams, essentially no. The difference is under fifteen grams and sits near the center of gravity, so the lever arm is short. It may register on a body just over three hundred grams, when carrying on a strap, or when shooting one-handed with the arm raised.

Why doesn’t weight scale with capacity?

Because the shell, protection board, and tabs weigh the same regardless, and the cell is only part of the total. Higher-capacity cells also tend to have better energy density, so weight per unit of capacity falls; a forty percent capacity gain often brings only a ten to twenty percent weight gain.

Does the weight difference affect gimbal balancing?

Slightly. Gimbals are sensitive to balance, so if the rig feels nose- or tail-heavy after a swap, rebalance once. Fifteen grams normally falls within what the motors can compensate and will not prevent balancing.

For light travel, should I take the 750 or the 1050?

It depends on whether you can recharge that day. If you are back at the hotel and shooting at a moderate pace, the 750 is lighter; if you are out all day with a heavy shooting load and no fixed charging point, the 1050’s extra runtime is worth far more than fifteen grams. For a middle option, see the 950mAh category.