Along with its intelligent charging functions, this Nitecore vaping battery charger also comes with other important safety features. Accidental battery reversal is indicated by 3 flashing LED’s. The i4 charger has built-in overcharge protection for longer battery life and safer battery operation in your mod. The charger unit also features temperature monitoring circuits to shut down charging if it detects overheating. Even the charger casing is made from a special, fire resistant plastic. In terms of choosing between the two models, it largely comes down to what your needs are. The i4 has a larger max charging current, leading to shorter charging times. However, the i2 would be more suitable for lower capacity cells (e.g., RCR, 14500, and AAA), due to the slightly lower charging current. Effectively, both units can only fully charge two wells at a time (i.e., the i4 has to alternate the current between paired wells). It is hard to say how long you should let the charger continue charging the NiMH cells beyond the indicator "termination" – but I recommend you pull them within an hour or so. Certainly, you wouldn't want to leave them in there over days, as this may wear them down eventually. Better to have slightly undercharged cells than overcooked ones!

Each battery is individually monitored by its own intelligent charge circuit. The charger senses the battery type, then automatically selects the correct charge cycle. Simple flashing LED’s above each slot show charging progress. When a battery is fully charged, all three LED’s show steady orange. As well as letting you know that charging is complete, the i4 Intellicharger automatically ends the charge cycle. This prolongs the life of your 18650 batteries and significantly reduces the risk of a battery failure or fire.Flipping over to the topside of the board, we are presented with more differences. Every single component is different. Even though the capacitors on the board on the non-genuine charger have Nitecore wraps on them and are the same (purportedly, basing this on the wrap only) rating/values, they're not the same components underneath which leads me to think that the counterfeiting goes down to component level too. The first thing that caught my eye was the low voltage input power side of the board. The genuine charger uses a single 1500uF capacity next to the transformer. The non-genuine one uses two 470uF ones instead. The transformer itself is different too. While the fake one doesn't have the previously seen "NITECOKE" wrap, it's marking is on the wrong side and its notably smaller. I've not stripped it further as there's no real need. side note, for camping and hiking trips, can any of these hook up to some sort of solar charger? That is probably next thing to buy, so just thinking a bit in advance. Li-ion/IMR/LiFePO4: 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14350, 14430, 14500, 14650, 16500, 16340(RCR123), 16650, 17350, 17500, 17650, 17670, 18350, 18490, 18500,18650, 22500, 22650, 25500, 26500, 26650

The second generation XX came out in Jan 2013, with a raised capacity of 50mAh (i.e., 2550 nominal, 2450mAh min), and improved discharge rate (although I don't know the exact number). Note* Although the Nitecore i4 is the charger of choice for ALL rechargeable batteries, I’m going to focus on the features that Vapers depend on. I understand that we all use our chargers for more than just the 18650 batteries we have, so I’ll include the litany of battery types the Nitecore i4 can charge at the end of this review The second most important improvement is current distribution. How this works is pretty straightforward; when you place 4 cells in the Nitecore i4, each cell is identified and calculations are made to optimize the charge, but more than that, when a battery is fully charged the Nitecore i4 diverts the current from that ‘slot’ and sends it to other slots. As each one becomes fully charged, the maximum current continues to be distributed to the remaining cells, speeding up the charge time even more. This is a major deal, and when combined with the increase in current to 1500mA, that’s all I needed to hear before buying one for each member of the staff. Expanded compatibility to support 3.7V and 4.35V batteries allows you to charge a host of batteries with a single charger. Compatible with 1.2V, 3.7V, 4.2V and 4.35V. By simple operation with the V button, it is easy to set the charging voltage in each slot independently. The Nitecore i4 also has a timeout feature that will allow a battery to charge for up to 20 hours. Once that 20 hours expires the charger stops charging that slot, and displays a full charge status. Without it, those of us that leave our batteries in our chargers could experience a possible explosion, especially if the battery we’re charging is of low quality, like the tens of thousands of counterfeit batteries.Do not over-discharge or overcharge the battery. Doing so will shorten the battery’s life and sometimes, it can make it pop or leak. smd mosfet που πρέπει να αντικατασταθεί, το έχω παραγγείλει, αν ειναι οκ μετα την αντικατάσταση θα το γραψω. Okay, thanks for the replies. I do kinda like the look of that D4, but too bad its just as sloooooowwwww. IMR battery restoration will restore 0V depleted cells by pressing and holding both the C and V buttons simultaneously. When you insert a battery into the charger, the three yellow lights over the bay indicate the charging status by the number of flashing LEDs (counting from the bottom up). Three solid LEDs means the battery is fully charged and the unit has stopped charging (in theory – scroll down for a discussion on NiMH).

The chargers run at their max CC cycle initially. I am not sure of the termination method being used, but it looks like it could simply be based on cell voltage. The recommended termination method for NiMH is dV/dT, which is based on a characteristic increase in the positive slope of voltage versus time. As before, this does not seem to be the case here. At the end of the day, these are incremental upgrades to the Intellicharger line from Nitecore. I think these chargers still offer good value for the money - especially compared to discount "budget" chargers that cost almost as much, but with unknown charging algorithms. They are also particularly useful for less sophisticated users who are just starting to use Li-ions (and may thus inadvertently try to charge NiMH and Li-ion on the same device - a real no-no on just about every other charger!).On Li-ions, overall performance seems similar to the early versions, with a good CC/CV-like algorithm (and with a nice and low charging rate at termination). When working with Li-ion (Lithium-ion), LiPo (Lithium-ion Polymer) and any rechargeable cells, please be cautious and carefully use as they are very sensitive to charging characteristics and may explode or burn if mishandled. Please make sure that you have great knowledge on all rechargeable batteries before you use them. Always charge batteries at the clean and fire-proof surface. Never leave charging batteries unattended. If you see that there are visible damages on the batteries, please do not use. Always keep, store and transport the rechargeable cells in a safe, non-conductive container in controlled environment. The Nitecore Intellicharger line has been popular here since their initial release – likely due to their dual support of both Li-ions and NiMH batteries. Physically, I can only see the improved battery rail in each well, but I can infer internal circuit changes as well. The new rail is definitely an improvement over the older springs – I found the slide action noticeably smoother now. :thumbsup:

I haven't bother showing what the paired charging would like, or RCR cells, but you can see my earlier i4 V2 review for that. Effectively, it may take up to twice as long to charge cells in paired channel bays. So, right to the point....... Just bought a new toy, the TK75vnKT, and still need to get batts and maybe a new charger. In fact, since I already have the light in hand, i am just DYING to try it.

Nitecore i4 Intellicharger - 4 Bay Battery Charger

Today, all the cells in use here are either the Nitecore 3100mAh 35A cells, or the Sony VTC5+, or the LG H2 cells. The 3100mAh 35A Nitecore cells are used more often than any of the others. Another cool improvement with the new Nitecore i4 is how users can now mix and match their 3.7v batteries and 4.2v batteries. Using the “V” button on the charger the user can set the charging voltage in each slot, independently. Being able to set the voltage to 3.7v or 4.2 for our cells means extending the life of that battery, which have notoriously short lifespans anyway.