DSLR battery help! - 1

My current nikon d90 battery is an EN-EL3e. 7.4V. 1500mAh.
I bought a spare battery thats an EN-EL3E. 7.4V. 2000mAh. <---
Will this spare battery affect my camera? Will it have negatives affect on the camera? Or anything? I'm pretty sure its a counterfeit but the battery works fine with the camera apart from the fact that it doesn't update the battery percentage left but I don't' think that's a big deal.

Over time, it WILL kill your camera. Your pumping 2A into a device that's only designed for 1.5.you're over-juicing it.you're giving it 33% more than it needs.

It will not have any detrimental effect on the camera. The above answer is nonsense. The camera is only going to take how much current it needs, regardless of the battery capacity. It's kind of like the difference between a 15 and 20 gallon gas tank.

However, as the battery has a higher capacity, the issue is whether or not it will be properly charged by the charger. The charger that comes with the D90 is a fast charger. And like all fast chargers, it charges at a high rate until the battery reaches overcharge, then it must cutoff the high charge.

So to do that, the charger must know when the battery goes into overcharge. Unfortunately, there's little the battery provides in the way of notification to the charger when this will happen, and there's only a small change in the battery's voltage when it reaches overcharge the that the charger must detect.

For this reason, it is always advisable to use the proper charger with the battery.

The two risks of using a different battery are:

1. The battery will never fully become charged. This means that you may not ever realize the full 2000mAH capacity of the battery. This may not be really that big a deal.

2. The battery goes into overcharge at the high charge rate. This typically results in the battery overheating, which causes the battery's internal pressure to raise, and eventually could cause the battery to catch fire or explode.

Explosion is normally not likely as there should be a safety vent in the battery, but if it is a counterfeit battery, who knows if there's a safety vent? A safety vent is supposed to be there to release internal pressure if it gets too high due to improper charging.

Due to those risks I can't recommend you use that battery with the D90's charger. However, if you insist on using the fast charger, monitor the battery carefully for any signs of heating. If it becomes hot, immediately disconnect it from the power. It is normal for a battery to get warm during charging, it is not normal for it to get hot.

Again, for safety reasons, I do not recommend you use that battery with your D90's charger.

The only way to ensure you can safely charge the battery is to buy a 3rd party trickle charger for it, or a fast charger designed for the battery.

A trickle charger will charge the battery slowly, and if it goes into overcharge, the charge rate will be low enough so that it will not overheat the battery. A trickle charger normally takes 12-16 hours to charge, and is also known as a slow charger or overnight charger.

As most people are not knowledgeable enough about charging, or about knowing what kind of charger they have, and what the difference between a slow and fast charger is (for example, the comment posted above), I never recommend using anything but the manufacturer's charger and battery.

Again, for safety reasons, I do not recommend you use that battery with your D90's charger.

First, the answer by "Who is on first" is nonsensical. 1500mAh or 2000mAh is a rating of milli amp hours and indicates the strength or capacity of the battery.

I concur with the answer by "Al The Photo" and agree that you should only use a Genuine Nikon battery in your D90.

It's not counterfeit. It works (anyhow). We like to call it compatible (apparently not fully though).It should even last longer than the original when fully charged.