The BLP785 battery model name belongs to the original OnePlus Nord, sold with the model numbers AC2001 and AC2003, and spare part listings give its capacity as 4115 mAh. The BLP letters are the code family of the Oppo group, and OnePlus sits inside that group. This page is about the first Nord only. Later Nord phones came with their own packs, so do not carry this code over to them.
Some shoppers write this code as "blp 785" or search "oneplus nord battery model name". All of these lead to one and the same pack. The Nord's BLP785 marking appears nowhere except on the battery's own label. The Nord has a glued back panel, so a repair person must pry it off to reach it. It is safer to take your phone's model number with you to the shop.
Quick facts
Step by step
Find the phone's model number
Open Settings and tap About device, or type model in the Settings search bar if the page is not on the first screen. Look for AC2001 or AC2003.
Have the old label read out
When the technician lifts the back, the label should show
BLP785with the capacity beside it. Request a clear photo of that label for your records.Lay the new pack beside the old one
The code, the connector shape and the outline of the pack should be identical. Any difference means the pack is meant for another phone.
Weigh and inspect before fitting
A pack that feels clearly lighter than the old one, or has smudged print, should go back. Do not accept it just because the box shows a big mAh number.
What the BLP785 battery model name tells you
Reading the code from the left, BLP is the family letters used on Oppo, Realme and OnePlus packs, and 785 is the pack's own number. The letters point to the maker group. The digits do not name the phone, and a nearby number such as 781 or 793 is a separate pack with its own phone list.
For BLP785, the spare part listings agree on one phone: the first OnePlus Nord. They give both of its model numbers, AC2001 and AC2003. No listing ties this code to any other phone, so treat it as a single-phone code until your own label says otherwise.
OnePlus Nord battery model and the phones people mix it with
The word Nord is used on several OnePlus phones, and that is where most wrong orders begin. Someone searches "oneplus nord battery model", sees a code and orders it for a Nord CE or a Nord 2. The name is shared, but the battery is not safe to assume.
| Phone | Model number | Status |
|---|---|---|
| OnePlus Nord | AC2001 | Matched by listings to BLP785 |
| OnePlus Nord | AC2003 | Matched by listings to BLP785 |
| OnePlus Nord CE 2 | Check on the phone | Separate phone, see its own page |
| Other Nord phones | Check on the phone | Not confirmed as BLP785 |
For the Nord CE 2, open the OnePlus Nord CE 2 battery page and match the code there. Do not reuse the BLP785 pack.
Rated and typical capacity of BLP785
The 4115 mAh figure comes from spare part listings, and it is the number you will see most often when buying. Phone makers usually print a rated (minimum) value on the pack, and it can sit slightly under the typical value used in adverts. Your own pack is the final word, so read it before you judge any new pack against it.
Capacity in mAh alone says little about a BLP785's energy; watt hours say more. Start with the Nord pack's 4115 mAh and multiply by its voltage. Divide that by a thousand. For example, a 4115 mAh pack marked 3.87 V gives about 15.9 Wh. Two packs may show the same mAh, yet store unequal energy when their voltages differ.
Do not expect more than the original space can hold. The Nord has fixed room inside, so a pack that claims a capacity far above 4115 mAh is a reason for caution, not a bonus.
Confirm the code before you order
The cleanest check is the old battery's own label. If the phone still switches on, note the model number first, then have the technician read the code when the back is off. If it does not switch on, the invoice or the retail box label is the next best proof of the exact variant.
A customer brought a Nord whose battery gave out by evening. The shop had a pack marked for a different Nord on the shelf. The technician read BLP785 off the old label, saw the codes did not agree, and ordered the right pack instead of forcing a connector that looked close.
Our page explaining the steps to read a battery model name covers every phone in full. Does your pack carry a code that is not BLP785? Look it up in the battery code list for the Oppo group.
When a BLP785 pack is ageing
| Sign | Probable cause | Response |
|---|---|---|
| Half the charge vanishes within an afternoon of light use | Cell has lost much of its holding power | Read the Nord's health figure, then plan a BLP785 |
| Phone powers down while the screen still says 15 to 30 percent | Worn cell sags under sudden load | Get the pack tested |
| Rear glass lifts at an edge or the display bulges | Cell is swelling | Stop using the charger and visit a service centre |
| Stays hot while doing nothing | Damaged pack or an app stuck in the background | Switch off, remove any case, then have it inspected |
Quick loss of charge is common in a phone this old, and it may come from background apps or poor network coverage. Before you blame the pack, go through the reasons a charge vanishes so fast. Still facing the problem? The steps for checking battery health will help you make the call.
If the back is bulging, the pack is warm while idle or you notice a leak, unplug the charger and do not squeeze the phone. Keep it on a metal or tile surface, far from anything that burns, and show it at a service centre. Replacement packs with a much bigger mAh claim than the original are usually fakes.
Fitting a new BLP785 pack
Adhesive holds the Nord shut, so it is best to hand this work to a repairer who owns the right tools. If you open it on your own, the back glass may crack and the battery connector may tear. Go to the brand's authorised service centre, or pick a technician you have seen do good work earlier.
When you receive the new pack, check these points:
- The print is crisp and carries the code BLP785, with batch details.
- The new pack weighs about the same as the one you removed.
- The connector looks the same as the old one.
- The mAh claim is near 4115 and not far above it.
Ask for the old pack back for a side by side look, and keep the photo of its label. More on routes and checks is in mobile battery replacement.
After the swap, let the phone run down once and then charge it fully with the original charger. Watch for odd heat during that first charge.
Look-alike codes near BLP785
Codes in the BLP family sit close to each other, and a missed digit at the counter is common. Faint print makes 5, 6 and 8 look alike, so read the label under bright light. Neighbouring numbers such as BLP781, BLP793 and BLP771 each have their own pages and their own phones.
Never pick a pack on mAh alone. Two packs with the same mAh can still carry different codes and different connectors, and the wrong one will not fit or will not charge properly.
Frequently asked questions
Which phone uses the BLP785 battery model name?
Listings match BLP785 to the original OnePlus Nord, with model numbers AC2001 and AC2003. The listed capacity is 4115 mAh. Read your old label to be sure.
What is the OnePlus Nord battery model name?
For the first OnePlus Nord, listings give BLP785. Later Nord phones such as the Nord CE 2 have their own packs, so check each phone's page.
How many mAh is the BLP785 battery?
The rated capacity is 4115 mAh. Your own pack may print a slightly smaller number, so check the sticker on that pack.
Is BLP 785 the same as BLP785?
Yes. The gap is just how people type it. On the battery the code is written as one word, BLP785.
Can I fit a much bigger mAh pack in my Nord?
Be careful. A pack claiming far more than the 4115 mAh listing is often a fake label. Match the code and the weight instead.
Can I change the Nord battery at home?
Better not. The back is glued and the pack is stuck in. Give the phone to the maker's authorised workshop or a technician you trust.