The BL49NT battery model, written on the pack as BL-49NT, is a Tecno code that a parts listing ties to the Tecno Spark Go and the Tecno Pop 7 Pro. Listings describe BL-49NT as a polymer part with 5000 mAh typical capacity. The BL- letters are used by Tecno, Infinix and itel, so the code points to a maker group, not to one phone.
People type BL-49NT many ways, such as "bl 49nt battery model name" or just "49nt". BL-49NT is on the cell sticker, which you see only once the back is off. Many Tecno phones look alike and the Spark Go has several versions, so the code on your old cell outweighs any list.
Quick facts
Step by step
Write down the exact phone name and model
Open Settings, tap About phone and note the name and model number. If you cannot find the model number, type model in the Settings search bar.
Have the old pack label read in person
A technician opens the back and reads the code line on the cell sticker. You are looking for
BL-49NT, written with a hyphen after BL.Compare the full code letter by letter
The new pack must carry the same full code. A pack that says
BL-49FTdiffers by only one letter and may belong to other phones.Check connector and size beside the old pack
Lay both packs flat. The plug, the length and the width should match, and the weight should feel close.
Test the new pack after fitting
Charge fully once, then watch the percentage for a day. Heat at the back or a sudden drop means you should go back to the service centre the same day.
Which phones use the BL49NT battery model
The listing seen for this code names two phones: the Tecno Spark Go and the Tecno Pop 7 Pro. The Spark Go and Pop 7 Pro are budget Tecno phones, which fits a shared BL-49NT. A single listing is thin evidence, so treat the table as a start and confirm on the label.
| Tecno handset | Status | Note |
|---|---|---|
| Tecno Spark Go | Matched by one listing | Several Spark Go versions exist, so match the model number |
| Tecno Pop 7 Pro | Matched by one listing | Check the old BL-49NT sticker to confirm |
| Other Tecno Pop and Spark Go phones | Unconfirmed for BL-49NT | Not assumed to share BL-49NT |
| Infinix and itel phones | Not confirmed | Same BL- letters, but no proof of a shared pack |
The Samsung and Motorola codes on the Samsung, Motorola and other battery list follow other naming habits. Use it to reach every code page of this group.
Spark Go versions: why the model number matters
Tecno has sold more than one phone under the Spark Go name, and the batteries are not the same across them. If you only say "Spark Go battery" at the counter, you may be handed a pack for another version. The listing for BL-49NT may point to only one of them, so say which one you hold.
Check the Spark Go model number under About phone or on the carton. Pass that number to the technician along with the phone name. A pack that matches the name but not the model number is the usual reason for a returned battery.
A customer brought a Pop 7 Pro that shut off at 25 percent. The counter first suggested a pack meant for a different Tecno of similar size. With the back open, the technician saw BL-49NT on the old cell and ordered that exact code. The offered pack had a different second half of the code, and it was set aside.
What 5000 mAh typical means for BL-49NT
Spark Go adverts quote 5000 mAh typical, the BL-49NT figure. The BL-49NT sticker may also show a rated minimum just under the headline. BL-49NT's rated figure is unconfirmed, so read your own label.
To get watt hours, take the capacity in mAh, multiply it by the volts printed on the pack and divide by 1000. No BL-49NT voltage is confirmed, so read it off the sticker. Never compare two packs by mAh alone, because a different voltage changes the stored energy.
A Spark Go's endurance is shaped by its screen, reception, brightness and apps. With BL-49NT, a Spark Go often covers a day of light use, though your habits decide.
Codes confused with BL-49NT
Tecno, Infinix and itel use many BL- codes, and they differ by one or two characters. The closest one on this site is BL-49FT. Do not swap BL-49FT for BL-49NT without reading its page and your own label.
- N and F look alike on a worn sticker. Tilt the BL-49NT label under bright light or request a sharp photo.
- Two phones of equal size and equal mAh can still use different connectors.
- A pack sold as "for Tecno" with no full code on it is a guess, not a match.
Our label reading guide covers any phone.
Signs the pack is wearing out
| Spark Go behaviour | Probable fault | Fix for BL-49NT |
|---|---|---|
| Spark Go drains within a few hours | BL-49NT worn after many cycles | Check Spark Go health, then plan a BL-49NT |
| Pop 7 Pro dies with 20 to 30 percent left | BL-49NT voltage dips under load | Have Tecno service test the BL-49NT |
| Spark Go back or screen edge lifting | BL-49NT has swollen | Unplug the Spark Go and go today |
| Spark Go warm at rest | Worn BL-49NT, bad cable or busy app | Restart the Pop 7 Pro, remove its cover, test BL-49NT |
Heavy apps and poor signal can mimic a dying cell on a Spark Go, so start with our drain page. The health check then helps you decide on BL-49NT.
Bulging, heat, leaks or dents make BL-49NT a fire hazard. Disconnect the Spark Go, keep the cell unpressed and intact, cool it and bring it to Tecno service. Inflated BL-49NT copies are common, so ask for BL-49NT by name.
Fitting a replacement without trouble
These Tecno phones have a body that is not meant for home opening, so leave the work to a trained hand. Tecno authorised service or a trusted repair shop can fit it in one visit. Give them the Spark Go model number and ask them to read BL-49NT off the old sticker before opening a new pack.
Before you pay, look for these warning signs on the new pack:
- It feels lighter than the old BL-49NT.
- BL-49NT lettering is smudged and lacks batch details.
- It claims more than a Spark Go sized pack can hold.
See our replacement guide for general fitting advice.
Ask for the old BL-49NT back briefly and photograph its sticker. The code in your gallery saves a second trip.
Everyday care for BL-49NT in a Tecno budget phone
Spark Go owners often charge overnight, and warmth harms BL-49NT more than charge counts. Keep the Spark Go off beds and cushions while charging, and off sunny dashboards. A thick cover that traps heat is worth removing during a long charge.
Use the Spark Go's boxed charger or one rated equally or lower. Change a Spark Go cable that heats at the plug. A Spark Go that keeps dying early, even freshly rebooted and fully charged, likely has a worn BL-49NT; test it first.
Frequently asked questions
Which phone uses the BL49NT battery model?
A listing matches BL-49NT to the Tecno Spark Go and the Tecno Pop 7 Pro, at 5000 mAh typical. Only one listing names BL-49NT, so read your old cell's code before ordering.
Is BL-49NT the same as BL-49FT?
Do not assume so. BL-49NT and BL-49FT are a letter apart and may fit different phones. Check the full code and plug, and see the BL-49FT page for its own phones.
How many mAh is a BL-49NT battery?
BL-49NT is listed at 5000 mAh typical. Expect BL-49NT's rated minimum to sit slightly below 5000 mAh.
What does the 49NT battery model name mean?
It is the short way people write BL-49NT. The BL part points to the Tecno, Infinix and itel group, and the rest identifies the pack. It does not name a phone by itself.
Can I fit a BL-49NT pack in any Tecno phone?
No. Many Tecno phones have their own codes and connectors. Check BL-49NT on the old sticker against the Spark Go model number in About phone.
How do I spot a fake BL-49NT battery?
BL-49NT fakes are lighter and blurry, lack batch marks and overstate capacity. Set the new BL-49NT beside the old one and compare weight, print and code.